Wiktionary
liquor up
vb. 1 (context transitive English) To cause someone to drink liquor, usually to excess. 2 (context intransitive English) To drink liquor, usually to excess
Usage examples of "liquor up".
Not since we took to shipping the liquor up here by the wagonload, Raj thought.
There are a couple of maids who come in every morning to do the rooms, and an old alcoholic who acts as porter and takes liquor up to the rooms if the customers ring.