Some willows (6)
I believe the answer is:
osiers
'some willows' is the definition.
(osier is a kind of willow)
This is the entire clue.
(Other definitions for osiers that I've seen before include "Flexible twigs used in basketwork" , "Roses I find with flexible willow twigs" , "Small willows" , "Willow twigs used in basket-making" , "Kind of willows for weaving - Rosie's?" .)