一饮而尽，喝光(直至最后一滴)，(把一杯)喝干，(把自己的杯子喝光，喝光(一杯酒)

1. to drink up, to drink to the last drop, to drink (a glass) dry, to drain (one's glass), to empty, to down (a drink)

transitive verb Godan verb with 'su' ending