lap belt
noun
1.
(in a motor vehicle) a seat belt secured to the framework of a seat and fastening across the lap of a driver or a passenger.
Origin
1950-55
Examples from the web for
lap belt
Booster seats must never be used with a
lap belt
only.
The position of the
lap belt
relative to the uterus was also measured during testing.
If your vehicle has a manual
lap belt
, it must be buckled for maximum protection.
The
lap belt
should lie across the thighs, not the stomach.
Remember to wear your
lap belt
low on your lap and against your thighs.