- a light, usually red, at the rear of an automobile, train, etc.
Origin of taillight
Also called tail lamp.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for taillight
We gained the graveled footpath only to see the taillight of the car dwindling to the north!The Return of Dr. Fu-Manchu
He smoked in silence, keeping his eyes on the red glow of the taillight ahead of them.The Penal Cluster
Ivar Jorgensen (AKA Randall Garrett)
Rand kept Cabot's taillight in sight until the broker swung into his drive and put his car in the garage.Murder in the Gunroom
Henry Beam Piper