| aileron | (noun) an airfoil that controls lateral motion | - |
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| airmailer | (noun) a mailer for airmail | - |
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| bailee | (noun) the agent to whom property involved in a bailment is delivered | - |
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| bailey | (noun) the outer defensive wall that surrounds the outer courtyard of a castle | - |
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| (noun) the outer courtyard of a castle | - |
| blackmailer | (noun) a criminal who extorts money from someone by threatening to expose embarrassing information about them | Synonyms: extortioner, extortionist |
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| jailer | (noun) someone who guards prisoners | Synonyms: gaoler, jailor, prison guard, screw, turnkey |
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| mailer | (noun) a container for something to be mailed | - |
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| (noun) an advertisement that is sent by mail | - |
| (noun) a person who mails something | - |
| nailer | (noun) a worker who attaches something by nailing it | - |
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| retailer | (noun) a merchant who sells goods at retail | Synonyms: retail merchant |
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| semitrailer | (noun) a trailer having wheels only in the rear; the front is supported by the towing vehicle | Synonyms: semi |
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| trailer | (noun) a wheeled vehicle that can be pulled by a car or truck and is equipped for occupancy | Synonyms: house trailer |
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| (noun) a large transport conveyance designed to be pulled by a truck or tractor | - |
| (noun) an advertisement consisting of short scenes from a motion picture that will appear in the near future | Synonyms: preview, prevue |
| (noun) someone who takes more time than necessary; someone who lags behind | Synonyms: dawdler, drone, laggard, lagger, poke |
| wailer | (noun) a mourner who utters long loud high-pitched cries | - |
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| wassailer | (noun) someone who enjoys riotous drinking | Synonyms: carouser |
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| (noun) someone who who drinks to the health of someone or the success of some venture | Synonyms: toaster |