Crossword Genius

Willow used in basket-weaving (5)

Ross

I believe the answer is:

osier

(Other definitions for osier that I've seen before include "Weaving cane for Rosie" , "Basket-maker" , "Basket-maker's willow" , "Basket-making material" , "Withy" .)

I've seen this clue in The New York Times.
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