hang one on verb3 •(slang, old-fashioned) To drink alcohol excessively, to the point of being drunk.We get along good all the time, me and the missus, but honest to God I wish she would let me alone for at least an hour in the morning until I pull myself together if I hung one on the night before. — 1952 •(slang, old-fashioned) To fight or beat up (someone). •(slang) To burden or assign a take to (someone). formshung one on · hanging one on · hangs one on