from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. See patent log.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. A mechanical device dragged from the stern of the vessel that indicates the vessel's speed through the water; usually consists of a propeller, a reading unit and a stiff line connecting them.

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


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