Answer: blinker

AnswerCrossword Clue
BLINKERTurn signal
BLINKERIntersection caution
BLINKERFlashing light
BLINKERSignal light
BLINKERSomething you use at every turn
BLINKERAuto signal
blinkerA device that blinks, esp. a vehicle's turn signal
blinkerto put blinders on