/ Thesaurus / W Synonyms of willow oak Find synonyms for: Noun1. willow oak, Quercus phellos, oak, oak treeusage: medium to large deciduous oak of the eastern United States having long lanceolate leaves and soft strong woodWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: pundit Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language