Source : Webster's Revised Unabridged Dictionary (1913)

Asparagine \As*par"a*gine\, n. [Cf. F. asparagine.] (Chem.)
   A white, nitrogenous, crystallizable substance,
   {C4H8N2O3+H2O}, found in many plants, and first obtained from
   asparagus. It is believed to aid in the disposition of
   nitrogenous matter throughout the plant; -- called also
   {altheine}.

Source : WordNet®

asparagine
     n : a crystalline amino acid found in proteins and in many
         plants (e.g., asparagus)