Source : Webster's Revised Unabridged Dictionary (1913)

Chive \Chive\, n. [F. cive, fr. L. cepa, caepa, onion. Cf.
   {Cives}, {Cibol}.] (Bot.)
   A perennial plant ({Allium Sch[oe]noprasum}), allied to the
   onion. The young leaves are used in omelets, etc. [Written
   also {cive}.]

Source : WordNet®

Allium schoenoprasum
     n : perennial having hollow cylindrical leaves used for
         seasoning [syn: {chives}, {chive}, {cive}, {schnittlaugh}]