busy engaged in use
busy%5:00:00:occupied:00 engaged%5:00:00:occupied:00 in_use%5:00:00:occupied:00
zaseden
(of facilities such as telephones or lavatories) unavailable for use by anyone else or indicating unavailability; (`engaged' is a British term for a busy telephone line)
her line is busy receptionists' telephones are always engaged the lavatory is in use kept getting a busy signal