A mental state of high arousal caused by anxiety fear, panic, surprise and/or confusion, or substance abuse. The behavioral signs are like a deer subjected to a car's headlights, such as widely opened eyes and a lack of motor reactions
A bright light, with a lens and reflector, on the front of a motor vehicle, designed to illuminate the road when driving at night; normally one of a pair
A light, with a powerful reflector, placed at the head of a locomotive, or in front of it, to throw light on the track at night, or in going through a dark tunnel