signal

US /ˈsɪɡ.nəl/
UK /ˈsɪɡ.nəl/
"signal" picture
1.

a gesture, action, or sound that conveys information or an instruction

:
•
He gave a signal to the driver to stop.
•
The traffic light changed to a green signal.
:
signindicationgesturecuewarning
2.

an electrical impulse or radio wave transmitted or received

:
•
The phone has a weak signal here.
•
The radio signal was clear.
1.

to make a gesture or sound to convey information or an instruction

:
•
He signaled for the waiter to bring the bill.
•
The referee signaled the end of the game.
:
gestureindicatemotionbeckonwarn
:
signalerturn signaltime signalsmoke signalsignal box