| Noun | 1. | visual signal - a signal that involves visual communication signal, signaling, sign - any nonverbal action or gesture that encodes a message; "signals from the boat suddenly stopped" visual communication - communication that relies on vision watch fire - a fire lighted at night as a signal light - a visual warning signal; "they saw the light of the beacon"; "there was a light at every corner" red light, warning light - a cautionary sign of danger signal flag, flag - a rectangular piece of fabric used as a signalling device air sock, air-sleeve, wind cone, wind sleeve, wind sock, windsock, drogue, sock - a truncated cloth cone mounted on a mast; used (e.g., at airports) to show the direction of the wind stake, post - a pole or stake set up to mark something (as the start or end of a race track); "a pair of posts marked the goal"; "the corner of the lot was indicated by a stake" trafficator, turn indicator, turn signal, blinker - a blinking light on a motor vehicle that indicates the direction in which the vehicle is about to turn armband - worn around arm as identification or to indicate mourning skyrocket, rocket - propels bright light high in the sky, or used to propel a lifesaving line or harpoon beacon, beacon fire - a fire (usually on a hill or tower) that can be seen from a distance brake light, stoplight - a red light on the rear of a motor vehicle that signals when the brakes are applied to slow or stop barber's pole - striped pole outside a barbershop |