Source : Webster's Revised Unabridged Dictionary (1913)

Sperm \Sperm\, n.[F. sperme, L. sperma, Gr. ???, ???, from ????
   to sow. Cf. {Spore}.] (Physiol.)
   The male fecundating fluid; semen. See {Semen}.

   {Sperm cell} (Physiol.), one of the cells from which the
      spermatozoids are developed.

   {Sperm morula}. (Biol.) Same as {Spermosphere}.

Source : WordNet®

sperm cell
     n : the male reproductive cell; the male gamete; "a sperm is
         mostly a nucleus surrounded by little other cellular
         material" [syn: {sperm}, {spermatozoon}, {spermatozoan}]