bone oil

Century Dictionary and Cyclopedia

1. n. A fetid, tarry liquid obtained in the dry distillation of bone. See Dippel's oil, under oil.
2. n. Fatty matter, of liquid consistence at common atmospheric temperature, extracted from bones by heating them with water or by the use of solvents: used in soap-making.

GNU Webster's 1913

1. n. 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.

WordNet 3.0

1. n. the liquid portion of bone fat; used as a lubricant and in leather manufacture
2. n. dark-colored ill-smelling oil obtained by carbonizing bone; used especially in sheep dips and in denaturing alcohol