Breadcrumb Home > Thesaurus > P Synonyms of packhorse Find synonyms for: Noun1. packhorse, workhorse, pack animal, sumpterusage: a workhorse used as a pack animalWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.Definition and meaning of packhorse (Dictionary) ✖ Related Content Daily Word Quiz: sepulture Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language