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

Bone \Bone\, n. [OE. bon, ban, AS. b[=a]n; akin to Icel. bein,
   Sw. ben, Dan. & D. been, G. bein bone, leg; cf. Icel. beinn
   straight.]
   1. (Anat.) The hard, calcified tissue of the skeleton of
      vertebrate animals, consisting very largely of calcic
      carbonate, calcic phosphate, and gelatine; as, blood and
      bone.

   Note: Even in the hardest parts of bone there are many minute
         cavities containing living matter and connected by
         minute canals, some of which connect with larger canals
         through which blood vessels ramify.

   2. One of the pieces or parts of an animal skeleton; as, a
      rib or a thigh bone; a bone of the arm or leg; also, any
      fragment of bony substance. (pl.) The frame or skeleton of
      the body.

   3. Anything made of bone, as a bobbin for weaving bone lace.

   4. pl. Two or four pieces of bone held between the fingers
      and struck together to make a kind of music.

   5. pl. Dice.

   6. Whalebone; hence, a piece of whalebone or of steel for a
      corset.

   7. Fig.: The framework of anything.

   {A bone of contention}, a subject of contention or dispute.
      

   {A bone to pick}, something to investigate, or to busy one's
      self about; a dispute to be settled (with some one).

   {Bone ash}, the residue from calcined bones; -- used for
      making cupels, and for cleaning jewelry.

   {Bone black} (Chem.), the black, carbonaceous substance into
      which bones are converted by calcination in close vessels;
      -- called also {animal charcoal}. It is used as a
      decolorizing material in filtering sirups, extracts, etc.,
      and as a black pigment. See {Ivory black}, under {Black}.
      

   {Bone cave}, a cave in which are found bones of extinct or
      recent animals, mingled sometimes with the works and bones
      of man. --Am. Cyc.

   {Bone dust}, ground or pulverized bones, used as a
      fertilizer.

Cave \Cave\ (k[=a]v), n. [F. cave, L. cavus hollow, whence cavea
   cavity. Cf. {Cage}.]
   1. A hollow place in the earth, either natural or artificial;
      a subterraneous cavity; a cavern; a den.

   2. Any hollow place, or part; a cavity. [Obs.] ``The cave of
      the ear.'' --Bacon.

   {Cave bear} (Zo["o]l.), a very large fossil bear ({Ursus
      spel[ae]us}) similar to the grizzly bear, but large;
      common in European caves.

   {Cave dweller}, a savage of prehistoric times whose dwelling
      place was a cave. --Tylor.

   {Cave hyena} (Zo["o]l.), a fossil hyena found abundanty in
      British caves, now usually regarded as a large variety of
      the living African spotted hyena.

   {Cave lion} (Zo["o]l.), a fossil lion found in the caves of
      Europe, believed to be a large variety of the African
      lion.

   {Bone cave}. See under {Bone}.