1 (also willow tree) a tree or shrub of temperate climates that typically has narrow leaves, bears catkins, and grows near water. Its pliant branches yield osiers for basketry, and its wood has various uses.
Genus Salix, family Salicaceae: many species
2a machine with revolving spikes used for cleaning cotton, wool, or other fibers.
Old Englishwelig, of Germanic origin; related to Dutch wilg