side ‧ light /ˈsaɪdlaɪt/ BrE AmE noun [countable] British English
one of the two small lights next to the main front lights on a car SYN parking light American English
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THESAURUS
■ on a car
▪ headlight ( also headlamp ) one of the two large lights at the front of a vehicle:
It was getting dark so she switched the headlights on.
▪ sidelight British English , parking light American English one of the two small lights next to the main lights, at the front and back of a car
▪ tail light one of the two red lights at the back of a vehicle
▪ indicator British English , turn signal American English one of the lights on a car that flash to show which way the car is turning