From Wiktionary, the free dictionary
säkerhet + bälte, used since 1920 in this sense (since 1879 in a different, now obsolete definition of a geographic zone)
säkerhetsbälte n
- seat belt (restraining belt), safety belt
- använd säkerhetsbältet!
- buckle up! (literally: use [your] seat belt)
- Hyponym: bilbälte
Declension of säkerhetsbälte