Dictionary definition · blinker
noun
- a light that flashes on and off; used as a signal or to send messages
- a blinking light on a motor vehicle that indicates the direction in which the vehicle is about to turn
- blind consisting of a leather eyepatch sewn to the side of the halter that prevents a horse from seeing something on either side
verb
- put blinders on (a horse)
Source: Open English WordNet (CC BY 4.0).