noun
seat belt; seatbelt; safety belt
Refers to the safety belt used in a car, airplane, or other seat. Common verbs include シートベルトを締める and シートベルトを着用する.
車に乗ったら、まずシートベルトを締めてください。
When you get in the car, please fasten your seat belt first.
飛
Please keep your seat belt fastened until the plane lands.