/ Thesaurus / S Synonyms of square bracket Find synonyms for: Noun1. bracket, square bracket, punctuation, punctuation markusage: either of two punctuation marks ([ or ]) used to enclose textual materialWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: acerbity Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language