Breadcrumb Home > Thesaurus > P Synonyms of pinnule Find synonyms for: Noun1. pinna, pinnule, leafletusage: division of a usually pinnately divided leafWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.Definition and meaning of pinnule (Dictionary) ✖ Related Content Daily Word Quiz: solecism Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language