osier
Synonym discussion
Sense: noun/1
'Willow' is the broad everyday word for the whole tree family. 'Osier' is narrower: it usually points to a willow grown for its long, bendable shoots, or to those shoots after they are cut for weaving. 'Basket willow' is a clear descriptive term when a gardener or craft worker wants to stress that practical use. In ordinary conversation, most people simply say 'willow'. Use 'osier' when the flexibility of the branches matters, especially in gardening, basket-making, and traditional craft contexts.
Common collocations
Etymology
English 'osier' came through Anglo-French and Old French from a word for a willow used in weaving. The word has long been linked with basket-making, which is why modern English can refer both to the tree and to one of its cut rods.