from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A shrub (Parthenium argentatum) of the southwest United States and Mexico whose sap was considered a potential source of natural rubber during World War II.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. much-branched subshrub with silvery leaves and small white flowers of Texas and northern Mexico; cultivated as a source of rubber
American Spanish, from Nahuatl cuauhuli : cuahuitl, tree + uli, latex gum.(American Heritage® Dictionary of the English Language, Fourth Edition)