Breadcrumb Home > Thesaurus > P Synonyms of pileus Find synonyms for: Noun 1. cap, pileus, plant part, plant structure usage: a fruiting structure resembling an umbrella or a cone that forms the top of a stalked fleshy fungus such as a mushroom WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.Definition and meaning of pileus (Dictionary) TrendingHere are the facts and trivia that people are buzzing about. Jewish Holidays, 2010-2030 (A.M. 5770-5791) Western Christian Holidays, 2010-2030 12 Steps to a New Year New Year's Resolution to Slim Down? Martin Luther King Speeches Books of the Bible: Old Testament Books in Order ✖ Related Content Daily Word Quiz: cognoscenti Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language