purple willow purp·le·wil·low uncommon noun 1. Eurasian osier having reddish or purple twigs and bark rich in tannin Synonymspurple willowred willowred osierbasket willowpurple osierSalix purpurea Related words Broader terms osier Parts Salix WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.
