tapster(n = noun.person) tapper - a tavern keeper who taps kegs or casks;
is a kind of publican, tavern keeper
Derived forms noun tap6, noun tap3
One whose business is to tap or draw ale or other liquor. [1913 Webster]
tapster, n. a person who draws and serves alcoholic drinks at a bar.
Etymology:
OE t{aelig}ppestre orig. fem. (as TAP(1), -STER)