A bright light, with a lens and reflector, on the front of a motor vehicle (or originally a ship or train), designed to illuminate the road when driving at night; normally one of a pair.
A woman's breast.
A jewel; especially a diamond.
Lysergic acid diethylamide (LSD).
A woman's erect nipples, partially masked by clothing.
A shining with fast intermittent light.
A very short period, notionally the time it takes to blink the eyes.
Sparkling intermittently.