The Collaborative International Dictionary of English v.0.48:

Coriander \Co`ri*an"der\ (k?`r?-?n"d?r), n. [L. coriandrum, fr.
   Gr. ????, ????, perh. fr. ??? bug, on account of the buglike
   or fetid smell of its leaves: cf. F. coriandre.] (Bot.)
   An umbelliferous plant, the Coriandrum sativum, the fruit
   or seeds of which have a strong smell and a spicy taste, and
   in medicine are considered as stomachic and carminative.
   [1913 Webster]

WordNet (r) 3.0 (2006):

coriander
    n 1: Old World herb with aromatic leaves and seed resembling
         parsley [syn: coriander, coriander plant, Chinese
         parsley, cilantro, Coriandrum sativum]
    2: dried coriander seeds used whole or ground [syn: coriander,
       coriander seed]
    3: parsley-like herb used as seasoning or garnish [syn:
       coriander, Chinese parsley, cilantro]