後席

(1)a seat at the back of a vehicle (especially the seat at the back of an automobile)

(2)車の後部座席（とくに自動車の後部のシート）

(3)a secondary or inferior position or status; "tennis has had to take a backseat while his work is so demanding"

(4)二次の、あるいは下位の地位または状態

(1)