1.
brake
A device for slowing or stopping a vehicle or machine.
2.
restraint; check
Something that slows down or restrains progress or activity (figurative).
Related Words
Antonym:
アクセル (accelerator)
Related:
タイヤ (tire)
Compare:
ペダル (pedal)
Related:
フットブレーキ (foot brake)
Related:
クラッチ (clutch (vehicle))