balsam willow,
salix pyrifolia small shrubby tree of eastern North America having leaves exuding an odor of balsam when crushed
creeping willow,
salix repens small trailing bush of Europe and Asia having straggling branches with silky green leaves of which several varieties are cultivated
willow -
A rotating spiked drum used to open and clean cotton heads.
Verb
willow -
To open and cleanse cotton, flax, wool, etc. by means of a willow.
Wikipedia
Willows, sallows, and osiers form the genus Salix, around 400 species of deciduous trees and shrubs, found primarily on moist soils in cold and temperate regions of the Northern Hemisphere. Most species are known as willow, but some narrow-leaved shrub species are called osier, and some broader-leaved species are referred to as sallow (from Old English sealh, related to the Latin word salix, willow). Some willows are low-growing or creeping shrubs; for example the Dwarf Willow rarely exceeds 6 cm (2 in) in height, though spreading widely across the ground.
OmegaWiki Dictionary
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willow Any of various deciduous trees or shrubs in the genus Salix.