Source : Webster's Revised Unabridged Dictionary (1913)

Calf \Calf\, n.; pl. {Calves}. [OE. calf, kelf, AS. cealf; akin
   to D. kalf, G. kalb, Icel. k[=a]lfr, Sw. kalf, Dan. kalv,
   Goth. kalb[=o]; cf. Skr. garbha fetus, young, Gr. ?????, Skr
   grabh to seize, conceive, Ir. colpa, colpach, a calf.
   [root]222.]
   1. The young of the cow, or of the Bovine family of
      quadrupeds. Also, the young of some other mammals, as of
      the elephant, rhinoceros, hippopotamus, and whale.

   2. Leather made of the skin of the calf; especially, a fine,
      light-colored leather used in bookbinding; as, to bind
      books in calf.

   3. An awkward or silly boy or young man; any silly person; a
      dolt. [Colloq.]

            Some silly, doting, brainless calf.   --Drayton.

   4. A small island near a larger; as, the Calf of Man.

   5. A small mass of ice set free from the submerged part of a
      glacier or berg, and rising to the surface. --Kane.

   6. [Cf. Icel. k[=a]lfi.] The fleshy hinder part of the leg
      below the knee.

   {Calf's-foot jelly}, jelly made from the feet of calves. The
      gelatinous matter of the feet is extracted by boiling, and
      is flavored with sugar, essences, etc.

Source : WordNet®

calf's-foot jelly
     n : a savory jelly made with gelatin obtained by boiling calves'
         feet