n. 酒鬼, 酒量大的人

[ noun ]
someone who drinks liquor repeatedly in small quantities
<noun.person>

Tippler \Tip"pler\, n.
1. One who keeps a tippling-house. [Obs.] --Latimer.

2. One who habitually indulges in the excessive use of
spirituous liquors, whether he becomes intoxicated or not.