A seat or place to sit (such as in a theater, airplane, or car); equivalent to the English word 'seat'.
劇場のシートは予約済みです。
The theater seats are reserved.
飛行機の窓側のシートが好きだ。
I like the window seat on airplanes.
古い車のシートは破れていたので張り替えた。
The old car's seat was torn, so I had it reupholstered.