| colpocystocele | (noun) hernia in which the urinary bladder protrudes through the wall of the vagina; sometimes occurs after childbirth | Synonyms: cystocele |
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| combustible | (noun) a substance that can be burned to provide heat or power | Synonyms: combustible material |
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| combustibleness | (noun) the quality of being capable of igniting and burning | Synonyms: burnability, combustibility |
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| comestible | (noun) any substance that can be used as food | Synonyms: eatable, edible, pabulum, victual, victuals |
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| comfortableness | (noun) a feeling of being at ease in a relationship | - |
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| (noun) a state of being relaxed and feeling no pain | Synonyms: comfort |
| companionableness | (noun) suitability to be a companion | Synonyms: companionability |
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| compiler | (noun) (computer science) a program that decodes instructions written in a higher order language and produces an assembly language program | Synonyms: compiling program |
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| (noun) a person who compiles information (as for reference purposes) | - |
| complement | (noun) something added to complete or embellish or make perfect | Synonyms: accompaniment |
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| (noun) either of two parts that mutually complete each other | - |
| (noun) a word or phrase used to complete a grammatical construction | - |
| (noun) number needed to make up a whole force | Synonyms: full complement |
| (noun) a complete number or quantity | - |
| (noun) one of a series of enzymes in the blood serum that are part of the immune response | - |
| complementarity | (noun) a relation between two opposite states or principles that together exhaust the possibilities | - |
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| (noun) the interrelation of reciprocity whereby one thing supplements or depends on the other | - |
| complementary | (noun) either one of two chromatic colors that when mixed together give white (in the case of lights) or grey (in the case of pigments) | Synonyms: complementary color |
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| complementation | (noun) (linguistics) a distribution of related speech sounds or forms in such a way that they only appear in different contexts | Synonyms: complementary distribution |
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| (noun) the grammatical relation of a word or phrase to a predicate | - |
| completeness | (noun) (logic) an attribute of a logical system that is so constituted that a contradiction arises if any proposition is introduced that cannot be derived from the axioms of the system | - |
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| (noun) the state of being complete and entire; having everything that is needed | - |
| completion | (noun) a concluding action | Synonyms: closing, culmination, mop up, windup |
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| (noun) (American football) a successful forward pass in football | Synonyms: pass completion |
| complex | (noun) a whole structure (as a building) made up of interconnected or related structures | Synonyms: building complex |
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| (noun) a conceptual whole made up of complicated and related parts | Synonyms: composite |
| (noun) (psychoanalysis) a combination of emotions and impulses that have been rejected from awareness but still influence a person's behavior | - |
| (noun) a compound described in terms of the central atom to which other atoms are bound or coordinated | Synonyms: coordination compound |
| complexifier | (noun) someone makes things complex | - |
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| complexion | (noun) the coloring of a person's face | Synonyms: skin color, skin colour |
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| (noun) (obsolete) a combination of elements (of dryness and warmth or of the four humors) that was once believed to determine a person's health and temperament | - |
| (noun) texture and appearance of the skin of the face | - |
| (noun) a point of view or general attitude or inclination | - |
| (noun) a combination that results from coupling or interlinking | - |
| complexity | (noun) the quality of being intricate and compounded | Synonyms: complexness |
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| complexness | (noun) the quality of being intricate and compounded | Synonyms: complexity |
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| comptroller | (noun) someone who maintains and audits business accounts | Synonyms: accountant, controller |
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| comptrollership | (noun) the position of comptroller | - |
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| conceivableness | (noun) the state of being conceivable | Synonyms: conceivability |
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| condolence | (noun) an expression of sympathy with another's grief | Synonyms: commiseration |
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| condyle | (noun) a round bump on a bone where it forms a joint with another bone | - |
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| console | (noun) housing for electronic instruments, as radio or television | Synonyms: cabinet |
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| (noun) an ornamental scroll-shaped bracket (especially one used to support a wall fixture) | - |
| (noun) a scientific instrument consisting of displays and an input device that an operator can use to monitor and control a system (especially a computer system) | - |
| (noun) a small table fixed to a wall or designed to stand against a wall | Synonyms: console table |
| constable | (noun) a lawman with less authority and jurisdiction than a sheriff | - |
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| (noun) a police officer of the lowest rank | Synonyms: police constable |
| controller | (noun) a mechanism that controls the operation of a machine | Synonyms: control |
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| (noun) someone who maintains and audits business accounts | Synonyms: accountant, comptroller |
| (noun) a person who directs and restrains | Synonyms: restrainer |
| controllership | (noun) the position of controller | - |
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| convalescence | (noun) gradual healing (through rest) after sickness or injury | Synonyms: recovery, recuperation |
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| convalescent | (noun) a person who is recovering from illness | - |
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| conventicle | (noun) a building for religious assembly (especially Nonconformists, e.g., Quakers) | Synonyms: meetinghouse |
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| (noun) a secret unauthorized meeting for religious worship | - |
| convertible | (noun) a car that has top that can be folded or removed | - |
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| (noun) a sofa that can be converted into a bed | Synonyms: sofa bed |
| (noun) a corporate security (usually bonds or preferred stock) that can be exchanged for another form of security (usually common stock) | Synonyms: convertible security |
| cooler | (noun) a refrigerator for cooling liquids | Synonyms: ice chest |
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| (noun) a cell for violent prisoners | Synonyms: tank |
| (noun) an iced drink especially white wine and fruit juice | - |
| coquille | (noun) a dish in the form of a scallop shell | - |
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| (noun) seafood served in a scallop shell | - |
| coracle | (noun) a small rounded boat made of hides stretched over a wicker frame; still used in some parts of Great Britain | - |
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| corpulence | (noun) the property of excessive fatness | Synonyms: adiposis, overweight, stoutness |
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| corpulency | (noun) more than average fatness | Synonyms: fleshiness, obesity |
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| corpuscle | (noun) either of two types of cells (erythrocytes and leukocytes) and sometimes including platelets | Synonyms: blood cell, blood corpuscle |
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| (noun) (nontechnical usage) a tiny piece of anything | Synonyms: atom, molecule, mote, particle, speck |
| corselet | (noun) a piece of body armor for the trunk; usually consists of a breastplate and back piece | Synonyms: corslet |
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| corslet | (noun) a piece of body armor for the trunk; usually consists of a breastplate and back piece | Synonyms: corselet |
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| cotyledon | (noun) embryonic leaf in seed-bearing plants | Synonyms: seed leaf |
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| counterexample | (noun) refutation by example | - |
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| counterplea | (noun) a plaintiff's reply to a defendant's plea | - |
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| countlessness | (noun) a number beyond counting | Synonyms: innumerableness |
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| couple | (noun) a pair who associate with one another | Synonyms: duet, duo, twosome |
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| (noun) a pair of people who live together | Synonyms: match, mates |
| (noun) (physics) something joined by two equal and opposite forces that act along parallel lines | - |
| (noun) two items of the same kind | Synonyms: brace, couplet, distich, duad, duet, duo, dyad, pair, span, twain, twosome, yoke |
| (noun) a small indefinite number | - |
| coupler | (noun) a mechanical device that serves to connect the ends of adjacent objects | Synonyms: coupling |
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| couplet | (noun) a stanza consisting of two successive lines of verse; usually rhymed | - |
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| (noun) two items of the same kind | Synonyms: brace, couple, distich, duad, duet, duo, dyad, pair, span, twain, twosome, yoke |
| covalence | (noun) valence characterized by the sharing of electrons in a chemical compound; the number of pairs of electrons an atom can share | Synonyms: covalency |
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| covalency | (noun) valence characterized by the sharing of electrons in a chemical compound; the number of pairs of electrons an atom can share | Synonyms: covalence |
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| coverlet | (noun) a decorative bedspread (usually quilted) | - |
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| coville | (noun) desert shrub of southwestern United States and New Mexico having persistent resinous aromatic foliage and small yellow flowers | Synonyms: creosote bush, hediondilla, Larrea tridentata |
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| crabapple | (noun) small sour apple; suitable for preserving | Synonyms: crab apple |
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| (noun) any of numerous wild apple trees usually with small acidic fruit | Synonyms: crab apple, wild apple |
| (noun) any of numerous varieties of crab apples cultivated for their small acidic (usually bright red) fruit used for preserves or as ornamentals for their blossoms | Synonyms: crab apple, cultivated crab apple |
| crackle | (noun) glazed china with a network of fine cracks on the surface | Synonyms: crackle china, crackleware |
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| (noun) the sharp sound of snapping noises | Synonyms: crackling, crepitation |
| crackleware | (noun) glazed china with a network of fine cracks on the surface | Synonyms: crackle, crackle china |
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| cradle | (noun) a baby bed with sides and rockers | - |
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| (noun) a trough that can be rocked back and forth; used by gold miners to shake auriferous earth in water in order to separate the gold | Synonyms: rocker |
| (noun) where something originated or was nurtured in its early existence | Synonyms: birthplace, place of origin, provenance, provenience |
| (noun) birth of a person | - |
| cradlesong | (noun) the act of singing a quiet song to lull a child to sleep | Synonyms: lullaby |
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| (noun) a quiet song intended to lull a child to sleep | Synonyms: berceuse, lullaby |
| crapulence | (noun) the act of drinking alcoholic beverages to excess | Synonyms: boozing, drink, drinking, drunkenness |
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| crawler | (noun) terrestrial worm that burrows into and helps aerate soil; often surfaces when the ground is cool or wet; used as bait by anglers | Synonyms: angleworm, dew worm, earthworm, fishing worm, fishworm, nightcrawler, nightwalker, red worm, wiggler |
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| (noun) a person who tries to please someone in order to gain a personal advantage | Synonyms: ass-kisser, lackey, sycophant, toady |
| (noun) a person who crawls or creeps along the ground | Synonyms: creeper |
| credibleness | (noun) the quality of being believable or trustworthy | Synonyms: believability, credibility |
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| crenelle | (noun) a notch or open space between two merlons in a crenelated battlement | Synonyms: crenel |
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| (noun) one of a series of rounded projections (or the notches between them) formed by curves along an edge (as the edge of a leaf or piece of cloth or the margin of a shell or a shriveled red blood cell observed in a hypertonic solution etc.) | Synonyms: crenation, crenature, crenel, scallop |
| creole | (noun) a mother tongue that originates from contact between two languages | - |
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| crepuscle | (noun) the time of day immediately following sunset | Synonyms: crepuscule, dusk, evenfall, fall, gloam, gloaming, nightfall, twilight |
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| crepuscule | (noun) the time of day immediately following sunset | Synonyms: crepuscle, dusk, evenfall, fall, gloam, gloaming, nightfall, twilight |
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| cringle | (noun) fastener consisting of a metal ring for lining a small hole to permit the attachment of cords or lines | Synonyms: eyelet, grommet, grummet, loop |
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| crinkle | (noun) a slight depression or fold in the smoothness of a surface | Synonyms: crease, furrow, line, seam, wrinkle |
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| crinkleroot | (noun) North American herb with pungent scaly or toothed roots | Synonyms: Cardamine diphylla, crinkle-root, crinkle root, Dentaria diphylla, pepper root, toothwort |
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| cripple | (noun) someone who is unable to walk normally because of an injury or disability to the legs or back | - |
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| crocodile | (noun) large voracious aquatic reptile having a long snout with massive jaws and sharp teeth and a body covered with bony plates; of sluggish tropical waters | - |
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| cromlech | (noun) a prehistoric megalithic tomb typically having two large upright stones and a capstone | Synonyms: dolmen, portal tomb |
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| crottle | (noun) any of several lichens of the genus Parmelia from which reddish brown or purple dyes are made | Synonyms: crotal, crottal |
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| crucible | (noun) a vessel made of material that does not melt easily; used for high temperature chemical reactions | Synonyms: melting pot |
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| cruller | (noun) small friedcake formed into twisted strips and fried; richer than doughnuts | Synonyms: twister |
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| cubbyhole | (noun) a small compartment | Synonyms: pigeonhole |
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| (noun) a small secluded room | Synonyms: cubby, snug, snuggery |
| cubicle | (noun) small area set off by walls for special use | Synonyms: booth, kiosk, stall |
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| (noun) small individual study area in a library | Synonyms: carrel, carrell, stall |
| (noun) small room in which a monk or nun lives | Synonyms: cell |
| cuddle | (noun) a close and affectionate (and often prolonged) embrace | Synonyms: nestle, snuggle |
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| cullender | (noun) bowl-shaped strainer; used to wash or drain foods | Synonyms: colander |
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| culpableness | (noun) a state of guilt | Synonyms: blameworthiness, culpability |
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| cupule | (noun) a sucker on the feet of certain flies | - |
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| (noun) cup-shaped structure of hardened bracts at the base of an acorn | Synonyms: acorn cup |
| curableness | (noun) capability of being cured or healed | Synonyms: curability |
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| curler | (noun) a mechanical device consisting of a cylindrical tube around which the hair is wound to curl it | Synonyms: crimper, hair curler, roller |
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| curlew | (noun) large migratory shorebirds of the sandpiper family; closely related to woodcocks but having a down-curved bill | - |
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| cuticle | (noun) hard outer covering or case of certain organisms such as arthropods and turtles | Synonyms: carapace, shell, shield |
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| (noun) the outer layer of the skin covering the exterior body surface of vertebrates | Synonyms: epidermis |
| (noun) the dead skin at the base of a fingernail or toenail | - |
| cutler | (noun) a dealer in cutlery | - |
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| cutlery | (noun) tableware implements for cutting and eating food | Synonyms: eating utensil |
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| (noun) a cutting implement; a tool for cutting | Synonyms: cutter, cutting tool |
| cutlet | (noun) thin slice of meat (especially veal) usually fried or broiled | Synonyms: escallop, scallop, scollop |
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| cuttle | (noun) ten-armed oval-bodied cephalopod with narrow fins as long as the body and a large calcareous internal shell | Synonyms: cuttlefish |
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| cuttlefish | (noun) ten-armed oval-bodied cephalopod with narrow fins as long as the body and a large calcareous internal shell | Synonyms: cuttle |
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| cycle | (noun) a wheeled vehicle that has two wheels and is moved by foot pedals | Synonyms: bicycle, bike, wheel |
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| (noun) a single complete execution of a periodically repeated phenomenon | Synonyms: oscillation |
| (noun) a periodically repeated sequence of events | - |
| (noun) a series of poems or songs on the same theme | - |
| (noun) an interval during which a recurring sequence of events occurs | Synonyms: rhythm, round |
| (noun) the unit of frequency; one hertz has a periodic interval of one second (named for Heinrich Rudolph Hertz) | Synonyms: cps, cycle per second, cycles/second, hertz, Hz |
| cycloolefin | (noun) alkene hydrocarbon which contains a closed ring of carbon atoms, but has no aromatic character. | Synonyms: cycloalkene |
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| cyclostyle | (noun) a writing implement with a small toothed wheel that cuts small holes in a stencil | - |
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| cymule | (noun) a small cyme, generally with few flowers | - |
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| cystocele | (noun) hernia in which the urinary bladder protrudes through the wall of the vagina; sometimes occurs after childbirth | Synonyms: colpocystocele |
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| cystoplegia | (noun) paralysis of the urinary bladder | Synonyms: cystoparalysis |
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| cytoskeleton | (noun) a microscopic network of actin filaments and microtubules in the cytoplasm of many living cells that gives the cell shape and coherence | - |
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| dabbler | (noun) any of numerous shallow-water ducks that feed by upending and dabbling | Synonyms: dabbling duck |
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| (noun) an amateur who engages in an activity without serious intentions and who pretends to have knowledge | Synonyms: dilettante, sciolist |
| dale | (noun) an open river valley (in a hilly area) | - |
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| dalesman | (noun) a person who lives in the dales of northern England | - |
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| daleth | (noun) the 4th letter of the Hebrew alphabet | - |
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| damoiselle | (noun) a young unmarried woman | Synonyms: damosel, damozel, damsel, demoiselle |
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| dangleberry | (noun) huckleberry of the eastern United States with pink flowers and sweet blue fruit | Synonyms: dangle-berry, Gaylussacia frondosa |
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| dapple | (noun) a small contrasting part of something | Synonyms: fleck, maculation, patch, speckle, spot |
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