noun
waiting room; duty room; staff room
A room where people wait, especially for work or duty, such as a standby room for staff or a waiting area in a facility.
医師は待機室で呼ばれるのを待っていた。
The doctor waited in the duty room to be called.
スタッフは待機室で次の指示を待っている。
The staff are waiting in the staff room for the next instructions.