from Wiktionary, Creative Commons Attribution/Share-Alike License
- proper n. A taxonomic genus within the family Polygonaceae — including the various knotweeds, smartweeds, and bistort.
from the GNU version of the Collaborative International Dictionary of English
- n. A genus of plants embracing a large number of species, including bistort, knotweed, smartweed, etc.
from The Century Dictionary and Cyclopedia
- n. A large genus of plants, type of the order Polygonaceæ and tribe Eupolygoneæ.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. diverse genus of herbs or woody subshrubs of north temperate regions
The name is probably derived from the Ancient Greek πολύς (polus, "many") and γόνυ (gony, "knee") (Wiktionary)