Source : Webster's Revised Unabridged Dictionary (1913)

Litchi \Li"tchi`\, n. (Bot.)
   The fruit of a tree native to China ({Nephelium Litchi}). It
   is nutlike, having a rough but tender shell, containing an
   aromatic pulp, and a single large seed. In the dried fruit
   which is exported the pulp somewhat resembles a raisin in
   color and form. [Written also {lichi}, and {lychee}.] --
   {lite}. See -{lith}.

Litchi \Li"tchi`\, n. (Bot.)
   A genus of East Indian sapindaceous trees consisting of a
   single species ({Litchi Chinensis}, syn. {Nephelium Litchi})
   which bears the litchi nut.

Source : WordNet®

litchi
     n 1: Chinese tree cultivated especially in Philippines and India
          for its edible fruit; sometimes placed in genus
          Nephelium [syn: {lichee}, {litchi tree}, {Litchi
          chinensis}, {Nephelium litchi}]
     2: Chinese fruit having a thin brittle shell enclosing a sweet
        jellylike pulp and a single seed; often dried [syn: {litchi
        nut}, {litchee}, {lichi}, {leechee}, {lichee}, {lychee}]