- a small, fast, lightly armed, unarmored, and highly maneuverable boat used chiefly for torpedoing enemy shipping.
Origin of PT boat
1940–45; p(atrol) t(orpedo)
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
- patrol torpedo boat, the former US term for an MTBCompare MTB