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|(Naut.)||a torpedo carried on the end of a spar usually projecting from the bow of a vessel, and intended to explode upon contact with an enemy's ships.|
|a canister or other vessel containing an explosive charge, and attached to the end of a long spar which projects from a ship or boat and is thrust against an enemy's ship, exploding the torpedo.|
Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.