Buckle

usgb/ˈbʌkl/Volume
Left Definition 1 of 4Right
LampPro Tip 1/2
Safety FirstPlay
Often used in the context of safety measures, especially in vehicles. SlideAlways buckle your helmet securely before riding.
LampPro Tip 2/2
Not Just BeltsPlay
'Buckle' is used for various fastening contexts, not limited to belts. SlideBuckle the lifejacket's straps to ensure it stays on.