/ Thesaurus / O Synonyms of oval window Find synonyms for: Noun1. fenestra ovalis, fenestra vestibuli, oval window, fenestra of the vestibule, fenestrausage: fenestra that has the base of the stapes attached to itWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: ontiguous Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language