The Collaborative International Dictionary of English v.0.48:

Crib \Crib\ (kr[i^]b), n. [AS. crybb; akin to OS. kribbja, D.
   krib, kribbe, Dan. krybbe, G. krippe, and perh. to MHG. krebe
   basket, G, korb, and E. rip a sort of wicker basket.]
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   1. A manger or rack; a feeding place for animals.
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            The steer lion at one crib shall meet. --Pope.
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   2. A stall for oxen or other cattle.
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            Where no oxen are, the crib is clean. --Prov. xiv.
                                                  4.
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   3. A small inclosed bedstead or cot for a child.
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   4. A box or bin, or similar wooden structure, for storing
      grain, salt, etc.; as, a crib for corn or oats.
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   5. A hovel; a hut; a cottage.
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            Why rather, Sleep, liest thou in smoky cribs, . . .
            Than in the perfumed chambers of the great? --Shak.
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   6. (Mining) A structure or frame of timber for a foundation,
      or for supporting a roof, or for lining a shaft.
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   7. A structure of logs to be anchored with stones; -- used
      for docks, pier, dams, etc.
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   8. A small raft of timber. [Canada]
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   9. A small theft; anything purloined; a plagiarism; hence, a
      translation or key, etc., to aid a student in preparing or
      reciting his lessons. [Colloq.]
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            The Latin version technically called a crib. --Ld.
                                                  Lytton.
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            Occasional perusal of the Pagan writers, assisted by
            a crib.                               --Wilkie
                                                  Collins.
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   10. A miner's luncheon. [Cant] --Raymond.
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   11. (Card Playing) The discarded cards which the dealer can
       use in scoring points in cribbage.
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The Collaborative International Dictionary of English v.0.48:

Crib \Crib\, v. t. [imp. & p. p. Cribbed (kr[i^]bd); p. pr. &
   vb. n. Cribbing.]
   1. To shut up or confine in a narrow habitation; to cage; to
      cramp.
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            If only the vital energy be not cribbed or cramped.
                                                  --I. Taylor.
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            Now I am cabin'd, cribbed, confined.  --Shak.
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   2. To pilfer or purloin; hence, to steal from an author; to
      appropriate; to plagiarize; as, to crib a line from
      Milton. [Colloq.]
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            Child, being fond of toys, cribbed the necklace.
                                                  --Dickens.
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The Collaborative International Dictionary of English v.0.48:

Crib \Crib\, v. i.
   1. To crowd together, or to be confined, as in a crib or in
      narrow accommodations. [R.]
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            Who sought to make . . . bishops to crib in a
            Presbyterian trundle bed.             --Gauden.
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   2. To make notes for dishonest use in recitation or
      examination. [College Cant]
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   3. To seize the manger or other solid object with the teeth
      and draw in wind; -- said of a horse.
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WordNet (r) 3.0 (2006):

crib
    n 1: baby bed with high sides made of slats [syn: crib, cot]
    2: a literal translation used in studying a foreign language
       (often used illicitly) [syn: pony, trot, crib]
    3: a bin or granary for storing grains
    4: the cards discarded by players at cribbage
    5: a card game (usually for two players) in which each player is
       dealt six cards and discards one or two [syn: cribbage,
       crib]
    v 1: use a crib, as in an exam
    2: take unauthorized (intellectual material)
    3: line with beams or planks; "crib a construction hole"