noun. ['ˈsiːtˌbɛlt'] a safety belt used in a car or plane to hold you in your seat in case of an accident.
1. Noun, singular or mass Feel down at the bottom of the anchor side of your old seatbelt. 2. Adjective Remove the seatbelt access panel on the driver seat, using a plastic trim removal tool. 3. Verb, past tense Remove the harness side seatbelt from your Toyota Corolla.