/ Thesaurus / H Synonyms of harpoon log Find synonyms for: Noun1. harpoon log, logusage: a cylindrical log with a device that registers distanceWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: immense Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language