Drink: get one round ahead (3)
I believe the answer is:
lap
I believe this is a double definition.
'drink' is the first definition.
(lapping is a kind of drinking)
'get one round ahead' is the second definition.
(in motor racing, for example)
(Other definitions for lap that I've seen before include "Thighs, when seated" , "Round in a race" , "A circuit of a racecourse" , "Once around the track" , "One circuit of a course" .)