/rownd"hows'/ , n. , pl. roundhouses /-how'ziz/ .
1. a building for the servicing and repair of locomotives, built around a turntable in the form of some part of a circle.
2. Naut. a cabin on the after part of a quarterdeck.
3. Slang. a punch in which the arm is typically brought straight out to the side or rear of the body and in which the fist describes an exaggerated circular motion.
4. Also called round trip . Pinochle. a meld of one king and queen of each suit.
[ 1580-90; ROUND 1 + HOUSE ]