Search Result for "cirsium arvense":
Wordnet 3.0

NOUN (1)

1. European thistle naturalized in United States and Canada where it is a pernicious weed;
[syn: Canada thistle, creeping thistle, Cirsium arvense]



WordNet (r) 3.0 (2006):

Cirsium arvense
    n 1: European thistle naturalized in United States and Canada
         where it is a pernicious weed [syn: Canada thistle,
         creeping thistle, Cirsium arvense]