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Search Result for "polygonum": 
Wordnet 3.0

NOUN (1)

1. diverse genus of herbs or woody subshrubs of north temperate regions;
[syn: Polygonum, genus Polygonum]

The Collaborative International Dictionary of English v.0.48:

Polygonum \Po*lyg"o*num\, n. [NL., fr. Gr. ? a kind of plant; poly`s many + go`ny the knee, a joint of a plant. So called in allusion to the numerous joints.] (Bot.) A genus of plants embracing a large number of species, including bistort, knotweed, smartweed, etc. [1913 Webster]