1. red lights at the rear of a vehicle that illuminate when the vehicle is running or braking
Usage: plural form

Examples

• The car’s taillights were broken after the accident.
• I could see the red glow of taillights ahead in the fog.
• The police officer noticed that one of the taillights wasn’t working.
• She followed the taillights of the truck through the dark mountain road.
• The mechanic replaced both taillights during the inspection.
• Brake lights are brighter than regular taillights when you press the pedal.