/ Thesaurus / P Synonyms of piggy bank Find synonyms for: Noun1. piggy bank, penny bank, savings bank, coin bank, money box, bankusage: a child's coin bank (often shaped like a pig)WordNet 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