Greetings,
saloon
/səˈluːn/
noun
1. (Brit) Also called saloon bar another word for
lounge (sense 5)
2. a large public room on a passenger ship
3. any large public room used for a specific purpose: a dancing saloon
Also from an etymology dictionary
http://www.etymonline.com/index.php
saloon (n.)
1728, anglicized form of
salon, and originally used interchangeable with it. Meaning "large hall in a public place for entertainment, etc." is from 1747; especially a passenger boat from 1817, also used of railway cars furnished like drawing rooms (1842). Sense of "public bar" developed by 1841, American English.