from The American Heritage® Dictionary of the English Language, 4th Edition
- n. Nautical A torpedo-shaped instrument with rotary fins that is dragged from the stern of a vessel to measure the speed or distance traveled. Also called screw log, taffrail log.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A taffrail log
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a cigar-shaped log with rotary fins that measure the ship's speed
Sorry, no etymologies found.
We have held the north-east trade for days now, and the miles roll off behind us as the patent log whirls and tinkles on the taffrail.