/ Thesaurus / P Synonyms of post chaise Find synonyms for: Noun1. post chaise, carriage, equipage, rigusage: closed horse-drawn carriage with four wheels; formerly used to transport passengers and mailWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: opulent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language