The Collaborative International Dictionary of English v.0.48:

Oil \Oil\ (oil), n. [OE. oile, OF. oile, F. huile, fr. L. oleum;
   akin to Gr. ?. Cf. Olive.]
   Any one of a great variety of unctuous combustible
   substances, more viscous than and not miscible with water;
   as, olive oil, whale oil, rock oil, etc. They are of animal,
   vegetable, or mineral origin and of varied composition, and
   they are variously used for food, for solvents, for
   anointing, lubrication, illumination, etc. By extension, any
   substance of an oily consistency; as, oil of vitriol.
   [1913 Webster]

   Note: The mineral oils are varieties of petroleum. See
         Petroleum. The vegetable oils are of two classes,
         essential oils (see under Essential), and natural
         oils which in general resemble the animal oils and
         fats. Most of the natural oils and the animal oils and
         fats consist of ethereal salts of glycerin, with a
         large number of organic acids, principally stearic,
         oleic, and palmitic, forming respectively stearin,
         olein, and palmitin. Stearin and palmitin prevail in
         the solid oils and fats, and olein in the liquid oils.
         Mutton tallow, beef tallow, and lard are rich in
         stearin, human fat and palm oil in palmitin, and sperm
         and cod-liver oils in olein. In making soaps, the acids
         leave the glycerin and unite with the soda or potash.
         [1913 Webster]

   Animal oil, Bone oil, Dipple's oil, etc. (Old Chem.), a
      complex oil obtained by the distillation of animal
      substances, as bones. See Bone oil, under Bone.

   Drying oils, Essential oils. (Chem.) See under Drying,
      and Essential.

   Ethereal oil of wine, Heavy oil of wine. (Chem.) See
      under Ethereal.

   Fixed oil. (Chem.) See under Fixed.

   Oil bag (Zool.), a bag, cyst, or gland in animals,
      containing oil.

   Oil beetle (Zool.), any beetle of the genus Meloe and
      allied genera. When disturbed they emit from the joints of
      the legs a yellowish oily liquor. Some species possess
      vesicating properties, and are used instead of
      cantharides.

   Oil box, or Oil cellar (Mach.), a fixed box or reservoir,
      for lubricating a bearing; esp., the box for oil beneath
      the journal of a railway-car axle.

   Oil cake. See under Cake.

   Oil cock, a stopcock connected with an oil cup. See Oil
      cup.

   Oil color.
   (a) A paint made by grinding a coloring substance in oil.
   (b) Such paints, taken in a general sense.
   (b) a painting made from such a paint.

   Oil cup, a cup, or small receptacle, connected with a
      bearing as a lubricator, and usually provided with a wick,
      wire, or adjustable valve for regulating the delivery of
      oil.

   Oil engine, a gas engine worked with the explosive vapor of
      petroleum.

   Oil gas, inflammable gas procured from oil, and used for
      lighting streets, houses, etc.

   Oil gland.
   (a) (Zool.) A gland which secretes oil; especially in birds,
       the large gland at the base of the tail.
   (b) (Bot.) A gland, in some plants, producing oil.

   Oil green, a pale yellowish green, like oil.

   Oil of brick, empyreumatic oil obtained by subjecting a
      brick soaked in oil to distillation at a high temperature,
      -- used by lapidaries as a vehicle for the emery by which
      stones and gems are sawn or cut. --Brande & C.

   Oil of talc, a nostrum made of calcined talc, and famous in
      the 17th century as a cosmetic. [Obs.] --B. Jonson.

   Oil of vitriol (Chem.), strong sulphuric acid; -- so called
      from its oily consistency and from its forming the
      vitriols or sulphates.

   Oil of wine, [OE]nanthic ether. See under [OE]nanthic.

   Oil painting.
   (a) The art of painting in oil colors.
   (b) Any kind of painting of which the pigments are originally
       ground in oil.

   Oil palm (Bot.), a palm tree whose fruit furnishes oil,
      esp. Elaeis Guineensis. See Elaeis.

   Oil sardine (Zool.), an East Indian herring (Clupea
      scombrina), valued for its oil.

   Oil shark (Zool.)
   (a) The liver shark.
   (b) The tope.

   Oil still, a still for hydrocarbons, esp. for petroleum.

   Oil test, a test for determining the temperature at which
      petroleum oils give off vapor which is liable to explode.


   Oil tree. (Bot.)
   (a) A plant of the genus Ricinus (Ricinus communis), from
       the seeds of which castor oil is obtained.
   (b) An Indian tree, the mahwa. See Mahwa.
   (c) The oil palm.

   To burn the midnight oil, to study or work late at night.


   Volatle oils. See Essential oils, under Essential.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Bone \Bone\ (b[=o]n; 110), 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 calcium
      carbonate, calcium phosphate, and gelatine; as, blood and
      bone.
      [1913 Webster]

   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.
         [1913 Webster]

   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.
      [1913 Webster]

   3. Anything made of bone, as a bobbin for weaving bone lace.
      [1913 Webster]

   4. pl. Two or four pieces of bone held between the fingers
      and struck together to make a kind of music.
      [1913 Webster]

   5. pl. Dice.
      [1913 Webster]

   6. Whalebone; hence, a piece of whalebone or of steel for a
      corset.
      [1913 Webster]

   7. Fig.: The framework of anything.
      [1913 Webster]

   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.

   Bone earth (Chem.), the earthy residuum after the
      calcination of bone, consisting chiefly of phosphate of
      calcium.

   Bone lace, a lace made of linen thread, so called because
      woven with bobbins of bone.

   Bone oil, an oil obtained by heating bones (as in the
      manufacture of bone black), and remarkable for containing
      the nitrogenous bases, pyridine and quinoline, and their
      derivatives; -- also called Dippel's oil.

   Bone setter. Same as Bonesetter. See in the Vocabulary.


   Bone shark (Zool.), the basking shark.

   Bone spavin. See under Spavin.

   Bone turquoise, fossil bone or tooth of a delicate blue
      color, sometimes used as an imitation of true turquoise.


   Bone whale (Zool.), a right whale.

   To be upon the bones of, to attack. [Obs.]

   To make no bones, to make no scruple; not to hesitate.
      [Low]

   To pick a bone with, to quarrel with, as dogs quarrel over
      a bone; to settle a disagreement. [Colloq.]
      [1913 Webster]

WordNet (r) 3.0 (2006):

bone oil
    n 1: the liquid portion of bone fat; used as a lubricant and in
         leather manufacture
    2: dark-colored ill-smelling oil obtained by carbonizing bone;
       used especially in sheep dips and in denaturing alcohol [syn:
       bone oil, Dippel's oil]