Source : Webster's Revised Unabridged Dictionary (1913)

Lard \Lard\, n. [F., bacon, pig's fat, L. lardum, laridum; cf.
   Gr. (?) fattened, fat.]
   1. Bacon; the flesh of swine. [Obs.] --Dryden.

   2. The fat of swine, esp. the internal fat of the abdomen;
      also, this fat melted and strained.

   {Lard oil}, an illuminating and lubricating oil expressed
      from lard.

   {Leaf lard}, the internal fat of the hog, separated in leaves
      or masses from the kidneys, etc.; also, the same melted.

Source : WordNet®

lard oil
     n : oil consisting chiefly of olein that is expressed from lard
         and used especially as a lubricant, cutting oil or
         illuminant