/ Thesaurus / B Synonyms of biro Find synonyms for: Noun1. ballpoint, ballpoint pen, ballpen, Biro, penusage: a pen that has a small metal ball as the point of transfer of ink to paperWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: sequester Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language