| acetaldehyde | (noun) a colorless volatile water-soluble liquid aldehyde used chiefly in the manufacture of acetic acid and perfumes and drugs | Synonyms: ethanal |
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| addlehead | (noun) a person with confused ideas; incapable of serious thought | Synonyms: addle-head, birdbrain, loon |
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| aldehyde | (noun) any of a class of highly reactive chemical compounds; used in making resins and dyes and organic acids | - |
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| aldehydic | (adjective) of or related to or containing aldehydes | - |
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| alehoof | (noun) trailing European aromatic plant of the mint family having rounded leaves and small purplish flowers often grown in hanging baskets; naturalized in North America; sometimes placed in genus Nepeta | Synonyms: field balm, gill-over-the-ground, Glechoma hederaceae, ground ivy, Nepeta hederaceae, runaway robin |
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| alehouse | (noun) a tavern where ale is sold | - |
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| apprehend | (verb) get the meaning of something | Synonyms: compass, comprehend, dig, get the picture, grasp, grok, savvy |
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| (verb) take into custody | Synonyms: arrest, collar, cop, nab, nail, pick up |
| (verb) anticipate with dread or anxiety | Synonyms: quail at |
| apprehended | (adjective) fully understood or grasped | Synonyms: appreciated, comprehended |
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| apprehender | (noun) a person who seizes or arrests (especially a person who seizes or arrests in the name of justice) | - |
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| (noun) a person who knows or apprehends | Synonyms: knower |
| apprehensible | (adjective) capable of being apprehended or understood | Synonyms: graspable, intelligible, perceivable, understandable |
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| apprehension | (noun) the act of apprehending (especially apprehending a criminal) | Synonyms: arrest, catch, collar, pinch, taking into custody |
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| (noun) the cognitive condition of someone who understands | Synonyms: discernment, savvy, understanding |
| (noun) painful expectation | Synonyms: misgiving |
| (noun) fearful expectation or anticipation | Synonyms: apprehensiveness, dread |
| apprehensive | (adjective) in fear or dread of possible evil or harm | - |
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| (adjective) quick to understand | Synonyms: discerning |
| (adjective) mentally upset over possible misfortune or danger etc | Synonyms: worried |
| apprehensively | (adverb) with anxiety or apprehension | Synonyms: anxiously, uneasily |
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| apprehensiveness | (noun) fearful expectation or anticipation | Synonyms: apprehension, dread |
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| arsehole | (noun) vulgar slang for anus | Synonyms: arse, asshole, bunghole |
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| bakehouse | (noun) a workplace where baked goods (breads and cakes and pastries) are produced or sold | Synonyms: bakery, bakeshop |
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| barehanded | (adjective) with bare hands | - |
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| bareheaded | (adjective) having the head uncovered | Synonyms: bared |
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| beehive | (noun) a man-made receptacle that houses a swarm of bees | Synonyms: hive |
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| (noun) any workplace where people are very busy | - |
| (noun) a hairdo resembling a beehive | - |
| (noun) a structure that provides a natural habitation for bees; as in a hollow tree | Synonyms: hive |
| beforehand | (adjective) being ahead of time or need | Synonyms: advance |
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| (adverb) ahead of time; in anticipation | Synonyms: ahead, in advance |
| behalf | (noun) as the agent of or on someone's part (usually expressed as `on behalf of' rather than `in behalf of') | - |
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| (noun) for someone's benefit (usually expressed as `in behalf' rather than `on behalf' and usually with a possessive) | - |
| behave | (verb) behave in a certain manner; show a certain behavior; conduct or comport oneself | Synonyms: acquit, act, bear, carry, comport, conduct, deport, do |
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| (verb) behave well or properly | Synonyms: comport |
| behavior | (noun) manner of acting or controlling yourself | Synonyms: behaviour, conduct, doings |
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| (noun) (psychology) the aggregate of the responses or reactions or movements made by an organism in any situation | Synonyms: behaviour |
| (noun) (behavioral attributes) the way a person behaves toward other people | Synonyms: behaviour, conduct, demeanor, demeanour, deportment |
| (noun) the action or reaction of something (as a machine or substance) under specified circumstances | Synonyms: behaviour |
| behavioral | (adjective) of or relating to behavior | Synonyms: behavioural |
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| behaviorism | (noun) an approach to psychology that emphasizes observable measurable behavior | Synonyms: behavioristic psychology, behaviourism, behaviouristic psychology |
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| behaviorist | (adjective) of or relating to behaviorism | Synonyms: behavioristic, behaviourist, behaviouristic |
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| (noun) a psychologist who subscribes to behaviorism | Synonyms: behaviourist |
| behavioristic | (adjective) of or relating to behaviorism | Synonyms: behaviorist, behaviourist, behaviouristic |
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| behaviour | (noun) manner of acting or controlling yourself | Synonyms: behavior, conduct, doings |
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| (noun) (psychology) the aggregate of the responses or reactions or movements made by an organism in any situation | Synonyms: behavior |
| (noun) (behavioral attributes) the way a person behaves toward other people | Synonyms: behavior, conduct, demeanor, demeanour, deportment |
| (noun) the action or reaction of something (as a machine or substance) under specified circumstances | Synonyms: behavior |
| behavioural | (adjective) of or relating to behavior | Synonyms: behavioral |
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| behaviourism | (noun) an approach to psychology that emphasizes observable measurable behavior | Synonyms: behaviorism, behavioristic psychology, behaviouristic psychology |
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| behaviourist | (adjective) of or relating to behaviorism | Synonyms: behaviorist, behavioristic, behaviouristic |
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| (noun) a psychologist who subscribes to behaviorism | Synonyms: behaviorist |
| behaviouristic | (adjective) of or relating to behaviorism | Synonyms: behaviorist, behavioristic, behaviourist |
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| behead | (verb) cut the head of | Synonyms: decapitate, decollate |
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| beheaded | (adjective) having had the head cut off | Synonyms: decapitated |
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| beheading | (noun) killing by cutting off the head | Synonyms: decapitation |
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| (noun) execution by cutting off the victim's head | Synonyms: decapitation |
| behemoth | (noun) someone that is abnormally large and powerful | Synonyms: colossus, giant, goliath, monster |
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| (noun) a person of exceptional importance and reputation | Synonyms: colossus, giant, heavyweight, titan |
| behest | (noun) an authoritative command or request | - |
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| behind | (adjective) having the lower score or lagging position in a contest | - |
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| (noun) the fleshy part of the human body that you sit on | Synonyms: arse, ass, backside, bottom, bum, buns, butt, buttocks, can, derriere, fanny, fundament, hind end, hindquarters, keister, nates, posterior, prat, rear, rear end, rump, seat, stern, tail, tail end, tooshie, tush |
| (adverb) in or to or toward the rear | - |
| (adverb) remaining in a place or condition that has been left or departed from | - |
| (adverb) in debt | Synonyms: behindhand, in arrears |
| (adverb) in or into an inferior position | - |
| (adverb) showing a time that is earlier than the actual time | Synonyms: slow |
| behindhand | (adjective) behind schedule | - |
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| (adverb) in debt | Synonyms: behind, in arrears |
| behold | (verb) see with attention | Synonyms: lay eyes on |
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| beholden | (adjective) under a moral obligation to someone | - |
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| beholder | (noun) a person who becomes aware (of things or events) through the senses | Synonyms: observer, perceiver, percipient |
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| beholding | (noun) perception by means of the eyes | Synonyms: seeing, visual perception |
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| behoove | (verb) be appropriate or necessary | Synonyms: behove |
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| behove | (verb) be appropriate or necessary | Synonyms: behoove |
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| bluehead | (noun) small Atlantic wrasse the male of which has a brilliant blue head | Synonyms: Thalassoma bifasciatum |
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| bonehead | (noun) a stupid person; these words are used to express a low opinion of someone's intelligence | Synonyms: blockhead, dumbass, dunce, dunderhead, fuckhead, hammerhead, knucklehead, loggerhead, lunkhead, muttonhead, numskull, shithead |
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| boneheaded | (adjective) (used informally) stupid | Synonyms: blockheaded, duncical, duncish, fatheaded, loggerheaded, thick-skulled, thick, thickheaded, wooden-headed |
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| bridgehead | (noun) an area in hostile territory that has been captured and is held awaiting further troops and supplies | Synonyms: foothold |
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| (noun) a defensive post at the end of a bridge nearest to the enemy | - |
| bufflehead | (noun) small North American diving duck; males have bushy head plumage | Synonyms: Bucephela albeola, butterball, dipper |
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| cakehole | (noun) informal terms for the mouth | Synonyms: gob, hole, maw, trap, yap |
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| chokehold | (noun) a restraining hold; someone loops the arm around the neck of another person in a tight grip, usually from behind | Synonyms: choke hold |
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| (noun) complete power over a person or situation | Synonyms: stranglehold, throttlehold |
| coffeehouse | (noun) a small restaurant where drinks and snacks are sold | Synonyms: cafe, coffee bar, coffee shop |
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| comprehend | (verb) get the meaning of something | Synonyms: apprehend, compass, dig, get the picture, grasp, grok, savvy |
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| (verb) to become aware of through the senses | Synonyms: perceive |
| (verb) include in scope; include as part of something broader; have as one's sphere or territory | Synonyms: cover, embrace, encompass |
| comprehended | (adjective) fully understood or grasped | Synonyms: appreciated, apprehended |
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| comprehendible | (adjective) capable of being comprehended or understood | Synonyms: comprehensible |
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| comprehensibility | (noun) the quality of comprehensible language or thought | Synonyms: understandability |
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| comprehensible | (adjective) capable of being comprehended or understood | Synonyms: comprehendible |
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| comprehension | (noun) an ability to understand the meaning or importance of something (or the knowledge acquired as a result) | - |
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| (noun) the relation of comprising something | Synonyms: inclusion |
| comprehensive | (adjective) including all or everything | - |
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| (adjective) broad in scope | - |
| (noun) an intensive examination testing a student's proficiency in some special field of knowledge | Synonyms: comp, comprehensive examination |
| comprehensively | (adverb) in an all-inclusive manner | - |
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| comprehensiveness | (noun) the capacity to understand a broad range of topics | Synonyms: breadth, largeness |
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| (noun) completeness over a broad scope | Synonyms: fullness |
| dehisce | (verb) burst or split open | - |
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| dehiscence | (noun) (biology) release of material by splitting open of an organ or tissue; the natural bursting open at maturity of a fruit or other reproductive body to release seeds or spores or the bursting open of a surgically closed wound | - |
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| dehiscent | (adjective) (of e.g. fruits and anthers) opening spontaneously at maturity to release seeds | - |
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| dehorn | (verb) take the horns off (an animal) | - |
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| (verb) prevent the growth of horns of certain animals | - |
| dehumanisation | (noun) the act of degrading people with respect to their best qualities | Synonyms: dehumanization |
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| dehumanise | (verb) make mechanical or routine | Synonyms: dehumanize |
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| (verb) deprive of human qualities | Synonyms: dehumanize |
| dehumanised | (adjective) divested of human qualities or attributes | Synonyms: dehumanized, unhuman |
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| dehumanization | (noun) the act of degrading people with respect to their best qualities | Synonyms: dehumanisation |
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| dehumanize | (verb) make mechanical or routine | Synonyms: dehumanise |
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| (verb) deprive of human qualities | Synonyms: dehumanise |
| dehumanized | (adjective) divested of human qualities or attributes | Synonyms: dehumanised, unhuman |
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| dehumidifier | (noun) an appliance to extract moisture from the air and make the environment more comfortable | - |
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| dehumidify | (verb) make less humid | - |
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| dehydrate | (verb) lose water or moisture | Synonyms: desiccate, dry up, exsiccate |
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| (verb) remove water from | Synonyms: desiccate |
| (verb) preserve by removing all water and liquids from | Synonyms: desiccate |
| dehydrated | (adjective) preserved by removing natural moisture | Synonyms: desiccated, dried |
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| (adjective) suffering from excessive loss of water from the body | - |
| dehydration | (noun) the process of extracting moisture | Synonyms: desiccation, drying up, evaporation |
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| (noun) dryness resulting from the removal of water | Synonyms: desiccation |
| (noun) depletion of bodily fluids | - |
| dehydrogenate | (verb) remove hydrogen from | - |
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| dehydroretinol | (noun) a viscous alcohol that is less active in mammals than is vitamin A1 | Synonyms: vitamin A2 |
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| diehard | (noun) one who adheres to traditional views | Synonyms: traditionalist |
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| doubleheader | (noun) two games instead of one (especially in baseball when the same two teams play two games on the same day) | Synonyms: double feature, twin bill |
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| eyehole | (noun) a small hole (usually round and finished around the edges) in cloth or leather for the passage of a cord or hook or bar | Synonyms: eyelet |
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| (noun) a hole (in a door or an oven etc) through which you can peep | Synonyms: peephole, spyhole |
| falsehood | (noun) the act of rendering something false as by fraudulent changes (of documents or measures etc.) or counterfeiting | Synonyms: falsification |
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| (noun) a false statement | Synonyms: falsity, untruth |
| fiddlehead | (noun) New World fern having woolly cinnamon-colored spore-bearing fronds in early spring later surrounded by green fronds; the early uncurling fronds are edible | Synonyms: cinnamon fern, fiddlehead fern, Osmunda cinnamonea |
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| (noun) tall fern of northern temperate regions having graceful arched fronds and sporophylls resembling ostrich plumes | Synonyms: Matteuccia struthiopteris, Onoclea struthiopteris, ostrich fern, Pteretis struthiopteris, shuttlecock fern |
| figurehead | (noun) figure on the bow of some sailing vessels | - |
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| (noun) a person used as a cover for some questionable activity | Synonyms: front, front man, nominal head, straw man, strawman |
| firehouse | (noun) a station housing fire apparatus and firemen | Synonyms: fire station |
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| foehn | (noun) a warm dry wind that blows down the northern slopes of the Alps | Synonyms: fohn |
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| forehand | (adjective) (of racket strokes) made with palm facing direction of stroke | Synonyms: forehanded |
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| (noun) (sports) a return made with the palm of the hand facing the direction of the stroke (as in tennis or badminton or squash) | Synonyms: forehand shot, forehand stroke |
| forehanded | (adjective) (of racket strokes) made with palm facing direction of stroke | Synonyms: forehand |
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| (adjective) having provided for the future | - |
| forehead | (noun) the part of the face above the eyes | Synonyms: brow |
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| (noun) the large cranial bone forming the front part of the cranium: includes the upper part of the orbits | Synonyms: frontal bone, os frontale |
| formaldehyde | (noun) a colorless poisonous gas; made by the oxidation of methanol | Synonyms: methanal |
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| freehand | (adjective) done by hand without mechanical aids or devices | Synonyms: freehanded |
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| freehanded | (adjective) given or giving freely | Synonyms: big, bighearted, bounteous, bountiful, giving, handsome, liberal, openhanded |
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| (adjective) done by hand without mechanical aids or devices | Synonyms: freehand |
| freehearted | (adjective) generous in providing aid to others | Synonyms: benevolent |
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| freehold | (noun) tenure by which land is held in fee simple or for life | - |
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| (noun) an estate held in fee simple or for life | - |
| freeholder | (noun) the owner of a freehold | - |
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| furfuraldehyde | (noun) a liquid aldehyde with a penetrating odor; made from plant hulls and corncobs; used in making furan and as a solvent | Synonyms: furfural |
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| gatehouse | (noun) a house built at a gateway; usually the gatekeeper's residence | - |
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| glyceraldehyde | (noun) a sweet crystalline aldehyde formed by the breakdown of sugars | Synonyms: glyceric aldehyde |
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| hawsehole | (noun) the hole that an anchor rope passes through | Synonyms: hawse, hawsepipe |
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