wardroom n 1: military quarters for dining and recreation for officers of a warship (except the captain)
Gunroom \Gun"room`\ (g[u^]n"r[=oo]m`), n. (Naut.) An apartment on the after end of the lower gun deck of a ship of war, usually occupied as a messroom by the commissioned officers, except the captain; -- called {wardroom} in the United States navy. [1913 Webster]
Wardroom \Ward"room`\, n. 1. (Naut.) A room occupied as a messroom by the commissioned officers of a war vessel. See {Gunroom}. --Totten. [1913 Webster] 2. A room used by the citizens of a city ward, for meetings, political caucuses, elections, etc. [U. S.] [1913 Webster]