1) Barkeep 2) Tapper 1) Barmaid of yore 2) Mixologist 3) One of many behind bars 4) Publican 5) Tapper 6) Tavern keeper 
• (n.) One whose business is to tap or draw ale or other liquor.
Tap'ster noun [ Anglo-Saxon tæppestre a female tapster. See Tap a plug, pipe, and -ster .] One whose business is to tap or draw ale or other liquor. 
a purveyor of beer and ale
[n] - a tavern keeper who taps kegs or casks
noun a tavern keeper who taps kegs or casks