| burden | (noun) weight to be borne or conveyed | Synonyms: load, loading |
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| (noun) the central idea that is expanded in a document or discourse | - |
| (noun) an onerous or difficult concern | Synonyms: encumbrance, incumbrance, load, onus |
| (noun) the central meaning or theme of a speech or literary work | Synonyms: core, effect, essence, gist |
| burdensomeness | (noun) unwelcome burdensome difficulty | Synonyms: heaviness, onerousness, oppressiveness |
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| burdock | (noun) any of several erect biennial herbs of temperate Eurasia having stout taproots and producing burs | Synonyms: clotbur |
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| bustard | (noun) large heavy-bodied chiefly terrestrial game bird capable of powerful swift flight; classified with wading birds but frequents grassy steppes | - |
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| butcherbird | (noun) shrikes that impale their prey on thorns | - |
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| (noun) large carnivorous Australian bird with the shrike-like habit of impaling prey on thorns | - |
| buzzard | (noun) a New World vulture that is common in South America and Central America and the southern United States | Synonyms: Cathartes aura, turkey buzzard, turkey vulture |
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| (noun) the common European short-winged hawk | Synonyms: Buteo buteo |
| buzzword | (noun) stock phrases that have become nonsense through endless repetition | Synonyms: cant |
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| byword | (noun) a condensed but memorable saying embodying some important fact of experience that is taken as true by many people | Synonyms: adage, proverb, saw |
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| camcorder | (noun) a portable television camera and videocassette recorder | - |
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| camelopard | (noun) tallest living quadruped; having a spotted coat and small horns and very long neck and legs; of savannahs of tropical Africa | Synonyms: Giraffa camelopardalis, giraffe |
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| canard | (noun) a deliberately misleading fabrication | - |
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| card | (noun) one of a set of small pieces of stiff paper marked in various ways and used for playing games or for telling fortunes | - |
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| (noun) a printed circuit that can be inserted into expansion slots in a computer to increase the computer's capabilities | Synonyms: add-in, board, circuit board, circuit card, plug-in |
| (noun) a rectangular piece of stiff paper used to send messages (may have printed greetings or pictures) | - |
| (noun) a card certifying the identity of the bearer | Synonyms: identity card |
| (noun) a sign posted in a public place as an advertisement | Synonyms: bill, notice, placard, poster, posting |
| (noun) (baseball) a list of batters in the order in which they will bat | Synonyms: batting order, lineup |
| (noun) a printed or written greeting that is left to indicate that you have visited | Synonyms: calling card, visiting card |
| (noun) a list of dishes available at a restaurant | Synonyms: bill of fare, carte, carte du jour, menu |
| (noun) (golf) a record of scores (as in golf) | Synonyms: scorecard |
| (noun) a witty amusing person who makes jokes | Synonyms: wag, wit |
| (noun) thin cardboard, usually rectangular | - |
| cardamom | (noun) aromatic seeds used as seasoning like cinnamon and cloves especially in pickles and barbecue sauces | Synonyms: cardamon, cardamum |
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| (noun) rhizomatous herb of India having aromatic seeds used as seasoning | Synonyms: cardamon, Elettaria cardamomum |
| cardamon | (noun) aromatic seeds used as seasoning like cinnamon and cloves especially in pickles and barbecue sauces | Synonyms: cardamom, cardamum |
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| (noun) rhizomatous herb of India having aromatic seeds used as seasoning | Synonyms: cardamom, Elettaria cardamomum |
| cardamum | (noun) aromatic seeds used as seasoning like cinnamon and cloves especially in pickles and barbecue sauces | Synonyms: cardamom, cardamon |
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| cardboard | (noun) a stiff moderately thick paper | Synonyms: composition board |
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| cardcase | (noun) a small case for carrying business cards | - |
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| cardcastle | (noun) an unstable construction with playing cards | Synonyms: card-house, cardhouse, house of cards |
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| cardholder | (noun) a player who holds a card or cards in a card game | - |
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| (noun) a person who holds a credit card or debit card | - |
| cardhouse | (noun) an unstable construction with playing cards | Synonyms: card-house, cardcastle, house of cards |
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| cardia | (noun) the opening into the stomach and that part of the stomach connected to the esophagus | - |
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| cardigan | (noun) knitted jacket that is fastened up the front with buttons or a zipper | - |
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| cardinal | (noun) crested thick-billed North American finch having bright red plumage in the male | Synonyms: cardinal grosbeak, Cardinalis cardinalis, redbird, Richmondena Cardinalis |
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| (noun) a variable color averaging a vivid red | Synonyms: carmine |
| (noun) (Roman Catholic Church) one of a group of more than 100 prominent bishops in the Sacred College who advise the Pope and elect new Popes | - |
| (noun) the number of elements in a mathematical set; denotes a quantity but not the order | Synonyms: cardinal number |
| cardinalate | (noun) the office of cardinal | Synonyms: cardinalship |
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| (noun) (Roman Catholic Church) the body of all cardinals of the church; elects and advises the pope | Synonyms: College of Cardinals, Sacred College, Sacred College of Cardinals |
| cardinalfish | (noun) small red fishes of coral reefs and inshore tropical waters | - |
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| cardinality | (noun) (mathematics) the number of elements in a set or group (considered as a property of that grouping) | - |
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| cardinalship | (noun) the office of cardinal | Synonyms: cardinalate |
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| cardiogram | (noun) a graphical recording of the cardiac cycle produced by an electrocardiograph | Synonyms: ECG, EKG, electrocardiogram |
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| cardiograph | (noun) medical instrument that records electric currents associated with contractions of the heart | Synonyms: electrocardiograph |
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| (noun) a medical instrument that measures the mechanical force of cardiac contractions and the amount of blood passing through the heart during a specified period by measuring the recoil of the body as blood is pumped from the ventricles | Synonyms: ballistocardiograph |
| cardiography | (noun) diagnostic procedure consisting of recording the activity of the heart electronically with a cardiograph (and producing a cardiogram) | Synonyms: electrocardiography |
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| cardioid | (noun) an epicycloid in which the rolling circle equals the fixed circle | - |
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| cardiologist | (noun) a specialist in cardiology; a specialist in the structure and function and disorders of the heart | Synonyms: heart specialist, heart surgeon |
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| cardiology | (noun) the branch of medicine dealing with the heart and its diseases | - |
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| cardiomegaly | (noun) an abnormal enlargement of the heart | Synonyms: enlarged heart, megacardia, megalocardia |
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| cardiomyopathy | (noun) a disorder (usually of unknown origin) of the heart muscle (myocardium) | Synonyms: myocardiopathy |
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| cardiopathy | (noun) a disease of the heart | Synonyms: heart disease |
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| cardiospasm | (noun) a spasm of the cardiac sphincter (between the esophagus and the stomach); if the cardiac sphincter does not relax during swallowing the passage of food into the stomach is obstructed | - |
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| carditis | (noun) inflammation of the heart | - |
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| cardoon | (noun) only parts eaten are roots and especially stalks (blanched and used as celery); related to artichokes | - |
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| (noun) southern European plant having spiny leaves and purple flowers cultivated for its edible leafstalks and roots | Synonyms: Cynara cardunculus |
| cardroom | (noun) a room for gambling on card games | - |
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| cards | (noun) a game played with playing cards | Synonyms: card game |
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| cardsharp | (noun) a professional card player who makes a living by cheating at card games | Synonyms: card shark, card sharp, card sharper, cardsharper, sharper, sharpie, sharpy |
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| cardsharper | (noun) a professional card player who makes a living by cheating at card games | Synonyms: card shark, card sharp, card sharper, cardsharp, sharper, sharpie, sharpy |
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| cashcard | (noun) a payment card that entitles the holder to receive cash | Synonyms: cash card |
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| catbird | (noun) North American songbird whose call resembles a cat's mewing | Synonyms: Dumetella carolinensis, gray catbird, grey catbird |
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| (noun) any of various birds of the Australian region whose males build ornamented structures resembling bowers in order to attract females | Synonyms: bowerbird |
| catchword | (noun) a favorite saying of a group, organization or individual | Synonyms: motto, shibboleth, slogan |
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| (noun) a word printed at the top of the page of a dictionary or other reference book to indicate the first or last item on that page | Synonyms: guide word, guideword |
| cedarbird | (noun) widely distributed over temperate North America | Synonyms: Bombycilla cedrorun, cedar waxwing |
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| centerboard | (noun) a retractable fin keel used on sailboats to prevent drifting to leeward | Synonyms: centreboard, drop keel, sliding keel |
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| centreboard | (noun) a retractable fin keel used on sailboats to prevent drifting to leeward | Synonyms: centerboard, drop keel, sliding keel |
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| cephalochordate | (noun) fish-like animals having a notochord rather than a true spinal column | - |
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| chalkboard | (noun) sheet of slate; for writing with chalk | Synonyms: blackboard |
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| chard | (noun) long succulent whitish stalks with large green leaves | Synonyms: leaf beet, spinach beet, Swiss chard |
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| (noun) beet lacking swollen root; grown as a vegetable for its edible leaves and stalks | Synonyms: Beta vulgaris cicla, chard plant, leaf beet, spinach beet, Swiss chard |
| checkerboard | (noun) a board having 64 squares of two alternating colors | Synonyms: checker board, chequerboard |
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| cheeseboard | (noun) tray on which cheeses are served | Synonyms: cheese tray |
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| chequerboard | (noun) a board having 64 squares of two alternating colors | Synonyms: checker board, checkerboard |
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| chessboard | (noun) a checkerboard used to play chess | Synonyms: chess board |
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| chipboard | (noun) a cheap hard material made from wood chips that are pressed together and bound with synthetic resin | Synonyms: hardboard |
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| chlordiazepoxide | (noun) a tranquilizer (trade names Librium and Libritabs) used in the treatment of alcoholism | Synonyms: Libritabs, Librium |
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| chord | (noun) a combination of three or more notes that blend harmoniously when sounded together | - |
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| (noun) a straight line connecting two points on a curve | - |
| chordamesoderm | (noun) the area of mesoderm that forms the notochord | Synonyms: chordomesoderm |
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| chordate | (noun) any animal of the phylum Chordata having a notochord or spinal column | - |
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| chorditis | (noun) inflammation of the vocal cords | - |
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| (noun) inflammation of the spermatic cord or vocal cords or vocal folds | - |
| chordomesoderm | (noun) the area of mesoderm that forms the notochord | Synonyms: chordamesoderm |
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| chordophone | (noun) a stringed instrument of the group including harps, lutes, lyres, and zithers | - |
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| churchwarden | (noun) an officer in the Episcopal church who helps a parish priest with secular matters | - |
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| churchyard | (noun) the yard associated with a church | Synonyms: God's acre |
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| clapboard | (noun) a long thin board with one edge thicker than the other; used as siding by lapping one board over the board below | Synonyms: weatherboard, weatherboarding |
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| clapperboard | (noun) photographic equipment used to synchronize sound and motion picture; boards held in front of a movie camera are banged together | - |
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| clavichord | (noun) an early stringed instrument like a piano but with more delicate sound | - |
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| clipboard | (noun) a small writing board with a clip at the top for holding papers | - |
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| clochard | (noun) a wanderer who has no established residence or visible means of support | Synonyms: drifter, floater, vagabond, vagrant |
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| coastguard | (noun) a military service responsible for the safety of maritime traffic in coastal waters | - |
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| coastguardsman | (noun) a member of a coastguard | - |
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| cofferdam | (noun) large watertight chamber used for construction under water | Synonyms: caisson, pneumatic caisson |
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| collard | (noun) variety of kale having smooth leaves | - |
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| collards | (noun) kale that has smooth leaves | Synonyms: collard greens |
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| concord | (noun) agreement of opinions | Synonyms: concordance, harmony |
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| (noun) the determination of grammatical inflection on the basis of word relations | Synonyms: agreement |
| (noun) a harmonious state of things in general and of their properties (as of colors and sounds); congruity of parts with one another and with the whole | Synonyms: concordance, harmony |
| concordance | (noun) an index of all main words in a book along with their immediate contexts | - |
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| (noun) agreement of opinions | Synonyms: concord, harmony |
| (noun) a harmonious state of things in general and of their properties (as of colors and sounds); congruity of parts with one another and with the whole | Synonyms: concord, harmony |
| concordat | (noun) a signed written agreement between two or more parties (nations) to perform some action | Synonyms: compact, covenant |
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| coordinate | (noun) a number that identifies a position relative to an axis | Synonyms: co-ordinate |
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| coordination | (noun) the regulation of diverse elements into an integrated and harmonious operation | - |
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| (noun) the skillful and effective interaction of movements | - |
| (noun) being of coordinate importance, rank, or degree | - |
| (noun) the grammatical relation of two constituents having the same grammatical form | - |
| coordinator | (noun) someone whose task is to see that work goes harmoniously | Synonyms: co-ordinator |
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| cord | (noun) a line made of twisted fibers or threads | - |
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| (noun) a cut pile fabric with vertical ribs; usually made of cotton | Synonyms: corduroy |
| (noun) a light insulated conductor for household use | Synonyms: electric cord |
| (noun) a unit of amount of wood cut for burning; 128 cubic feet | - |
| cordage | (noun) the ropes in the rigging of a ship | - |
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| (noun) the amount of wood in an area as measured in cords | - |
| cordgrass | (noun) any of several perennial grasses of the genus Spartina; some important as coastal soil binders | Synonyms: cord grass |
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| cordial | (noun) strong highly flavored sweet liquor usually drunk after a meal | Synonyms: liqueur |
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| cordiality | (noun) a cordial disposition | Synonyms: amity |
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| cordierite | (noun) a blue mineral of magnesium and iron and aluminum and silicon and oxygen; often used as a gemstone | - |
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| cordite | (noun) explosive powder (nitroglycerin and guncotton and petrolatum) dissolved in acetone and dried and extruded in brown cords | - |
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| corditis | (noun) inflammation of the spermatic cord, accompanied by pain in the testis, generally caused by an infection originating in the urethra or by a tumor, hydrocele, or varicocele | - |
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| cordoba | (noun) the basic unit of money in Nicaragua; equal to 100 centavos | - |
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| cordon | (noun) adornment consisting of an ornamental ribbon or cord | - |
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| (noun) cord or ribbon worn as an insignia of honor or rank | - |
| (noun) a series of sentinels or of military posts enclosing or guarding some place or thing | - |
| cordovan | (noun) a fine leather originally made in Cordoba, Spain | - |
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| cords | (noun) cotton trousers made of corduroy cloth | Synonyms: corduroys |
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| corduroy | (noun) a cut pile fabric with vertical ribs; usually made of cotton | Synonyms: cord |
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| (noun) a road made of logs laid crosswise | - |
| corduroys | (noun) cotton trousers made of corduroy cloth | Synonyms: cords |
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| cordwood | (noun) firewood cut and stacked in cords; wood sold by the cord | - |
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| corkboard | (noun) a heat-insulating building material consisting of cork granules that are made into sheets by compressing and baking | - |
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| counterbombardment | (noun) bombardment intended to destroy or neutralize enemy weapons | - |
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| counterdemonstration | (noun) a demonstration held in opposition to another demonstration | - |
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