headlights

plural of headlight; especially a pair on a single vehicle.

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.
(US, in-plural, slang, vulgar) A woman's breast.
(Canada, in-plural, slang, vulgar) A woman's erect nipples, partially masked by clothing.
(US, in-plural, slang) A jewel; especially a diamond.
(US, in-plural, slang) Lysergic acid diethylamide (LSD).