/ Thesaurus / P Synonyms of pig a back Find synonyms for: Adverb1. piggyback, pickaback, pig-a-backusage: on a railroad flatcar; "the trailer rode piggyback across the country"2. piggyback, pickaback, pig-a-backusage: on the back or shoulder or astraddle on the hip; "she carried her child piggyback"WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: entomology Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language