(a) a lamp positioned at the side of a room or area; (b) a lamp at the side of a vehicle; (later) spec. = sidelight, n. 3d.

(a) a lamp mounted on the brake-van of a train (now historical); (b) a (usually red) light at the rear of a motor vehicle that comes on when the…

(a) Nautical and Aeronautics = navigation light n. at navigation, n. compounds 2; (b) each of a set of small lights located on the front, rear, or…

A bright lamp designed to cast a narrow and intense beam directly on to a person or place; the light cast by such a lamp. Cf. limelight, n.

= rear light n.

(a) an electric light casting a narrow and intense beam; = spotlight, n. 1a; (b) a powerful auxiliary electric lamp on a motor vehicle used to…

Chiefly British and Irish English. A small light on either side of the front (or rear) of a motor vehicle, used to increase visibility of the vehicle…

= parking light n.

a small light on either side of the front or rear of a motor vehicle, highlighting the position and width of the vehicle when parked at night…

= reversing light n.

(a) = stop lamp n. above; (b) North American = stop sign n. below; also figurative.

= pass lamp n.

an extra lamp on a motor vehicle for improving visibility in fog; a fog lamp.

a light on the rear of a motor vehicle, which is automatically illuminated when the brakes are applied.

Australian colloquial. = parking light n. at parking, n. compounds 2. Usually in plural.