/ Thesaurus / P Synonyms of plumb bob Find synonyms for: Noun1. plumb bob, plumb, plummet, bobusage: the metal bob of a plumb lineWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: inutiae Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language