The Collaborative International Dictionary of English v.0.48:

Cup \Cup\ (k[u^]p), n. [AS. cuppe, LL. cuppa cup; cf. L. cupa
   tub, cask; cf. also Gr. ky`ph hut, Skr. k[=u]pa pit, hollow,
   OSlav. kupa cup. Cf. Coop, Cupola, Cowl a water vessel,
   and Cob, Coif, Cop.]
   1. A small vessel, used commonly to drink from; as, a tin
      cup, a silver cup, a wine cup; especially, in modern
      times, the pottery or porcelain vessel, commonly with a
      handle, used with a saucer in drinking tea, coffee, and
      the like.
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   2. The contents of such a vessel; a cupful.
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            Give me a cup of sack, boy.           --Shak.
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   3. pl. Repeated potations; social or excessive indulgence in
      intoxicating drinks; revelry.
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            Thence from cups to civil broils.     --Milton.
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   4. That which is to be received or indured; that which is
      allotted to one; a portion.
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            O my Father, if it be possible, let this cup pass
            from me.                              --Matt. xxvi.
                                                  39.
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   5. Anything shaped like a cup; as, the cup of an acorn, or of
      a flower.
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            The cowslip's golden cup no more I see. --Shenstone.
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   6. (Med.) A cupping glass or other vessel or instrument used
      to produce the vacuum in cupping.
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   Cup and ball, a familiar toy of children, having a cup on
      the top of a piece of wood to which, a ball is attached by
      a cord; the ball, being thrown up, is to be caught in the
      cup; bilboquet. --Milman.

   Cup and can, familiar companions.

   Dry cup, Wet cup (Med.), a cup used for dry or wet
      cupping. See under Cupping.

   To be in one's cups, to be drunk.
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