Headlight

[Sarah]

A light, with a powerful reflector, placed at the head of alocomotive, or in front of it, to throw light on the track at night,or in going through a dark tunnel.

[Dave Paprocki]

The front [portion] of a car that [emits] a [beam] of light.

[Justin Bieber]

The visible [outline] of a womans nipples especially when they are erect. Erection can occur due to the change or drop of weather or [temperature] in an environment, sexual excitation or constant [friction]. This appearance may get a lot of men aroused.

[Greta]

A powerful light at the front of a motor vehicle or railway engine.

[Sarah]

A big [pimple] or [zit], usually bright red and/or throbbing, right smack in the middle of your forehead. It is usually very [conspicuous] and someone will almost certainly call you out on it.

[Raeanne Dimick]

a large, powerful light at the front of a vehicle, usually one of two: