from the GNU version of the Collaborative International Dictionary of English
- n. A genus of composite plants in which the scales of the involucre are united so as to form a kind of bur; cocklebur; clotbur.
from The Century Dictionary and Cyclopedia
- n. A genus of composite plants, of the tribe Helianthoideæ and subtribe Ambrosieæ.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. coarse herbs having small heads of greenish flowers followed by burrs with hooked bristles
Sorry, no etymologies found.