The American Heritage® Dictionary of the English Language, 4th Edition
n. Any of various submersed aquatic herbs of the genus Elodea, native to the New World, having opposite or whorled one-nerved narrow leaves and small axillary flowers.
n. Any of several aquatic herbs of the genus Elodea
the GNU version of the Collaborative International Dictionary of English
n. See anacharis.
The Century Dictionary and Cyclopedia
n. Any wild aquatic plant without special use or beauty.
n. Specifically, the choke-pondweed or water-thyme, Elodea Canadensis (Anacharis Alsinas-trum), of the Hydrocharideæ. See pondweed and Babington's-curse.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. a weedy aquatic plant of genus Elodea
Word Usage
"She had dragged a little waterweed from under the ice and was now being deprived of it by her drake."