A vacant position; a vacancy or opening due to an unfilled post or missing member.
採用が決まり、部署の欠員は解消された。
A hire was made and the department's vacancy was filled.
学級委員に欠員が出たので選挙を行った。
A vacancy appeared for the class representative, so an election was held.
欠員があるため、急いで補充人員を探している。
Because there is a vacancy, we are urgently looking for replacement staff.