The Collaborative International Dictionary of English v.0.48:

Crush \Crush\ (kr[u^]sh), v. t. [imp. & p. p. Crushed
   (kr[u^]sht); p. pr. & vb. n. Crushing.] [OE. cruschen,
   crousshen, Of. cruisir, croissir, fr. LL. cruscire, prob. of
   Ger. origin, from a derivative of the word seen in Goth.
   kruistan to gnash; akin to Sw. krysta to squeeze, Dan.
   kryste, Icel. kreysta.]
   1. To press or bruise between two hard bodies; to squeeze, so
      as to destroy the natural shape or integrity of the parts,
      or to force together into a mass; as, to crush grapes.
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            Ye shall not offer unto the Lord that which is
            bruised, or crushed, or broken, or cut. --Lev. xxii.
                                                  24.
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            The ass . . . thrust herself unto the wall, and
            crushed Balaam's foot against the wall. --Num. xxii.
                                                  25.
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   2. To reduce to fine particles by pounding or grinding; to
      comminute; as, to crush quartz.
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   3. To overwhelm by pressure or weight; to beat or force down,
      as by an incumbent weight.
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            To crush the pillars which the pile sustain.
                                                  --Dryden.
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            Truth, crushed to earth, shall rise again. --Bryant.
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   4. To oppress or burden grievously.
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            Thou shalt be only oppressed and crushed alway.
                                                  --Deut.
                                                  xxviii. 33.
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   5. To overcome completely; to subdue totally.
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            Speedily overtaking and crushing the rebels. --Sir.
                                                  W. Scott.
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   6. to subdue or overwhelm (a person) by argument or a cutting
      remark; to cause (a person) to feel chagrin or
      humiliation; to squelch.
      [PJC]

   To crush a cup, to drink. [Obs.]

   To crush out.
      (a) To force out or separate by pressure, as juice from
          grapes.
      (b) To overcome or destroy completely; to suppress.
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The Collaborative International Dictionary of English v.0.48:

Crush \Crush\ (kr[u^]sh), v. i.
   To be or become broken down or in, or pressed into a smaller
   compass, by external weight or force; as, an eggshell crushes
   easily.
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The Collaborative International Dictionary of English v.0.48:

Crush \Crush\, n.
   1. A violent collision or compression; a crash; destruction;
      ruin.
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            The wreck of matter, and the crush of worlds.
                                                  --Addison.
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   2. Violent pressure, as of a crowd; a crowd which produced
      uncomfortable pressure; as, a crush at a reception.
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   Crush hat, a hat which collapses, and can be carried under
      the arm, and when expanded is held in shape by springs;
      hence, any hat not injured by compressing.

   Crush room, a large room in a theater, opera house, etc.,
      where the audience may promenade or converse during the
      intermissions; a foyer.
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            Politics leave very little time for the bow window
            at White's in the day, or for the crush room of the
            opera at night.                       --Macaulay.
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WordNet (r) 3.0 (2006):

crush
    n 1: leather that has had its grain pattern accentuated [syn:
         crushed leather, crush]
    2: a dense crowd of people [syn: crush, jam, press]
    3: temporary love of an adolescent [syn: puppy love, calf
       love, crush, infatuation]
    4: the act of crushing [syn: crush, crunch, compaction]
    v 1: come down on or keep down by unjust use of one's authority;
         "The government oppresses political activists" [syn:
         oppress, suppress, crush]
    2: to compress with violence, out of natural shape or condition;
       "crush an aluminum can"; "squeeze a lemon" [syn: squash,
       crush, squelch, mash, squeeze]
    3: come out better in a competition, race, or conflict; "Agassi
       beat Becker in the tennis championship"; "We beat the
       competition"; "Harvard defeated Yale in the last football
       game" [syn: beat, beat out, crush, shell, trounce,
       vanquish]
    4: break into small pieces; "The car crushed the toy"
    5: humiliate or depress completely; "She was crushed by his
       refusal of her invitation"; "The death of her son smashed
       her" [syn: crush, smash, demolish]
    6: crush or bruise; "jam a toe" [syn: jam, crush]
    7: make ineffective; "Martin Luther King tried to break down
       racial discrimination" [syn: break down, crush]
    8: become injured, broken, or distorted by pressure; "The
       plastic bottle crushed against the wall"