pussy willow pus·sy·wil·low uncommon noun 1. small willow of eastern North America having grayish leaves and silky catkins that come before the leaves Synonymspussy willowSalix discolor 2. much-branched Old World willow having large catkins and relatively large broad leaves Synonymsgoat willowflorist's willowpussy willowSalix caprea Related words Broader terms willowsallow Parts Salix WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.