资料来源 : pyDict

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资料来源 : Webster's Revised Unabridged Dictionary (1913)

Crab \Crab\ (kr[a^]b), n. [AS. crabba; akin to D. krab, G.
   krabbe, krebs, Icel. krabbi, Sw. krabba, Dan. krabbe, and
   perh. to E. cramp. Cf. {Crawfish}.]
   1. (Zo["o]l.) One of the brachyuran Crustacea. They are
      mostly marine, and usually have a broad, short body,
      covered with a strong shell or carapace. The abdomen is
      small and curled up beneath the body.

   Note: The name is applied to all the Brachyura, and to
         certain Anomura, as the hermit crabs. Formerly, it was
         sometimes applied to Crustacea in general. Many species
         are edible, the blue crab of the Atlantic coast being
         one of the most esteemed. The large European edible
         crab is {Cancer padurus}. {Soft-shelled crabs} are blue
         crabs that have recently cast their shells. See
         {Cancer}; also, {Box crab}, {Fiddler crab}, {Hermit
         crab}, {Spider crab}, etc., under {Box}, {Fiddler}.
         etc.

   2. The zodiacal constellation Cancer.

   3. [See {Crab}, a.] (Bot.) A crab apple; -- so named from its
      harsh taste.

            When roasted crabs hiss in the bowl, Then nightly
            sings the staring owl.                --Shak.

   4. A cudgel made of the wood of the crab tree; a crabstick.
      [Obs.] --Garrick.

   5. (Mech.)
      (a) A movable winch or windlass with powerful gearing,
          used with derricks, etc.
      (b) A form of windlass, or geared capstan, for hauling
          ships into dock, etc.
      (c) A machine used in ropewalks to stretch the yarn.
      (d) A claw for anchoring a portable machine.

   {Calling crab}. (Zo["o]l.) See {Fiddler}., n., 2.

   {Crab apple}, a small, sour apple, of several kinds; also,
      the tree which bears it; as, the European crab apple
      ({Pyrus Malus} var. sylvestris); the Siberian crab apple
      ({Pyrus baccata}); and the American ({Pyrus coronaria}).
      

   {Crab grass}. (Bot.)
      (a) A grass ({Digitaria, or Panicum, sanguinalis}); --
          called also {finger grass}.
      (b) A grass of the genus {Eleusine} ({E. Indica}); --
          called also {dog's-tail grass}, {wire grass}, etc.

   {Crab louse} (Zo["o]l.), a species of louse ({Phthirius
      pubis}), sometimes infesting the human body.

   {Crab plover} (Zo["o]l.), an Asiatic plover ({Dromas
      ardeola}).

   {Crab's eyes}, or {Crab's stones}, masses of calcareous
      matter found, at certain seasons of the year, on either
      side of the stomach of the European crawfishes, and
      formerly used in medicine for absorbent and antacid
      purposes; the gastroliths.

   {Crab spider} (Zo["o]l.), one of a group of spiders
      ({Laterigrad[ae]}); -- called because they can run
      backwards or sideways like a crab.

   {Crab tree}, the tree that bears crab applies.

   {Crab wood}, a light cabinet wood obtained in Guiana, which
      takes a high polish. --McElrath.

   {To catch a crab} (Naut.), a phrase used of a rower:
      (a) when he fails to raise his oar clear of the water;
      (b) when he misses the water altogether in making a
          stroke.

Crab \Crab\ (kr[a^]b), v. t.
   1. To make sour or morose; to embitter. [Obs.]

            Sickness sours or crabs our nature.   --Glanvill.

   2. To beat with a crabstick. [Obs.] --J. Fletcher.

Crab \Crab\, v. i. (Naut.)
   To drift sidewise or to leeward, as a vessel. --Ham. Nav.
   Encyc.

Crab \Crab\, a. [Prob. from the same root as crab, n.]
   Sour; rough; austere.

         The crab vintage of the neighb'ring coast. --Dryden.

资料来源 : WordNet®

crab
     v 1: direct (an aircraft) into a crosswind
     2: scurry sideways like a crab
     3: fish for crab
     4: complain; "What was he hollering about?" [syn: {gripe}, {grouse},
         {beef}, {squawk}, {bellyache}, {holler}]
     [also: {crabbing}, {crabbed}]

crab
     n 1: decapod having eyes on short stalks and a broad flattened
          carapace with a small abdomen folded under the thorax
          and pincers
     2: a quarrelsome grouch [syn: {crabby person}]
     3: (astrology) a person who is born while the sun is in Cancer
        [syn: {Cancer}]
     4: the fourth sign of the zodiac; the sun is in this sign from
        about June 21 to July 22 [syn: {Cancer}, {Cancer the Crab}]
     5: the edible flesh of any of various crabs [syn: {crabmeat}]
     6: infests the pubic region of the human body [syn: {crab louse},
         {pubic louse}, {Phthirius pubis}]
     7: a stroke of the oar that either misses the water or digs too
        deeply; "he caught a crab and lost the race"
     [also: {crabbing}, {crabbed}]