Search Result for "lectin": 
Wordnet 3.0

NOUN (1)

1. any of several plant glycoproteins that act like specific antibodies but are not antibodies in that they are not evoked by an antigenic stimulus; 



WordNet (r) 3.0 (2006):

lectin
    n 1: any of several plant glycoproteins that act like specific
         antibodies but are not antibodies in that they are not
         evoked by an antigenic stimulus