noun
Refers to one person playing two roles, typically in a film, play, or similar performance. Also used figuratively for one person handling two functions.
See also: 二役
この映画で、彼は一人二役を演じている。
In this movie, he plays a dual role.
社長が一人二役で会長も兼任している。
The president is also serving as chairman, doing double duty.