drunken gait; wide-based gait
Medical or descriptive term for the unsteady, staggering walk of a drunk person; also used clinically for a wide-based gait resembling drunkenness.
A patient with a drunken gait was brought into the emergency room.
Seeing his staggering walk, I could tell he was quite drunk.
千鳥足 is a more common, everyday term for a drunken staggering walk, while 酩酊歩行 is a formal, clinical expression.
Compound of 酩酊 (drunkenness) and 歩行 (walking). The exact historical derivation is uncertain, but the term is used in modern medical and descriptive contexts.