roundhouse

1. (nautical, now chiefly historical) The uppermost room or cabin of any note upon the stern of a ship.historical

2. (nautical, now historical) A privy near the bow of a vessel, especially as reserved for officers.historical

3. (rail transport) A circular building in which locomotives are housed, sometimes with a turntable.Examples: "Crewe North Motive Power Depot is to be modernised completely. This includes the provision of a new coaling plant, ash handling plant, and two new locomotive sheds of the latest roundhouse type, each with 32 roads radiating from a 70-ft. dia. turntable."; "Archaeologists working on HS2 in Birmingham have uncovered the remains of what is believed to be the world's oldest railway roundhouse at Curzon Street station."

4. (archaeology) A prehistoric dwelling typical of northwest Europe in the Iron Age and Bronze Age.Examples: "A central stone slab cist containing the burial was surrounded by a circles of stones placed on edge, probably to represent the round house in which the deceased had lived."

5. (chiefly US) A punch or kick delivered with an exaggerated sweeping movement.US

6. (card games) In the game of pinochle, a meld consisting of a queen and king in each of the four suits.