Commerce destroyer

Com´merce de`stroy´er

1.(Nav.) A very fast, unarmored, lightly armed vessel designed to capture or destroy merchant vessels of an enemy. Not being intended to fight, they may be improvised from fast passenger steamers.
Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.
References in periodicals archive ?
As the fateful date approached, airmen worked out the kinks in the Commerce Destroyers' new weapons systems and refined their skip bombing on the rusted-out hulk of a beached freighter.
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