noun
on-stage composure; stage presence; nerves on stage
Refers to the calmness and confidence needed to perform in front of an audience, especially in theater or public speaking.
彼は舞台度胸があって、大観衆の前でも落ち着いている。
He has on-stage composure and stays calm even in front of a large audience.
度胸 is general courage or nerve, while 舞台度胸 specifically refers to composure on stage.
Compound of 舞台 (stage) and 度胸 (courage, nerve).