/ Thesaurus / T Synonyms of taffrail log Find synonyms for: Noun1. patent log, screw log, taffrail log, logusage: a cigar-shaped log with rotary fins that measure the ship's speedWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: candor Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language