
• A larger, swifter, and more powerful armed type of torpedo boat, originally intended principally for the destruction of torpedo boats, but later used also as a more formidable torpedo boat.
Found on
http://thinkexist.com/dictionary/meaning/torpedo-boat_destroyer/
Tor·pe'do-boat` de·stroy'er A larger, swifter, and more powerful armed type of torpedo boat, originally intended principally for the destruction of torpedo boats, but later used also as a more formidable torpedo boat.
Found on
http://www.encyclo.co.uk/webster/T/72

Torpedo Boat Destroyers were all-purpose fighting ships used during the Great War to defend ships from torpedo attacks, engaging enemy transport ships and submarines, and carrying out reconnaissance work. They developed into the modern Destroyer.
Found on
http://www.probertencyclopaedia.com/browse/RT.HTM

[
n] - small destroyer that was the forerunner of modern destroyers
Found on
http://www.webdictionary.co.uk/definition.php?query=torpedo-boat%20destroye
noun small destroyer that was the forerunner of modern destroyers; designed to destroy torpedo boats
Found on
https://www.encyclo.co.uk/local/20974
No exact match found.