wigwag

Etymology
+ . The noun is derived from the verb.

Noun

 * 1) Any of a number of mechanical or electrical devices which cause a component to oscillate between two states.
 * 2) A device that causes one or more lights to flash in a preset pattern.
 * 3)  A red light near the door of a sound stage that flashes to indicate that cameras are rolling inside the stage and that all people and vehicles outside should remain quiet; a red-eye.
 * 4)  A device used to cause lamps installed on a motor vehicle, especially an emergency vehicle such as an ambulance or police car, to flash as a warning.
 * 5)  A device with multiple (often two), alternately flashing lights which is installed at a railway level crossing (or grade crossing), a movable bridge, etc., to warn vehicular traffic to stop.
 * 6)  An instrument that creates a wigwagging motion for polishing.
 * 7)  A warning device inside the cabin of a truck that causes a mechanical arm to drop into view when the pressure in the airbrake system of the truck becomes too low for the brakes to be reliably deployed.
 * 8)  A grade crossing signal with a swinging motion used to indicate an approaching train.
 * 9)  A signal sent by waving a flag to and fro.
 * 1)  A device with multiple (often two), alternately flashing lights which is installed at a railway level crossing (or grade crossing), a movable bridge, etc., to warn vehicular traffic to stop.
 * 2)  An instrument that creates a wigwagging motion for polishing.
 * 3)  A warning device inside the cabin of a truck that causes a mechanical arm to drop into view when the pressure in the airbrake system of the truck becomes too low for the brakes to be reliably deployed.
 * 4)  A grade crossing signal with a swinging motion used to indicate an approaching train.
 * 5)  A signal sent by waving a flag to and fro.
 * 1)  An instrument that creates a wigwagging motion for polishing.
 * 2)  A warning device inside the cabin of a truck that causes a mechanical arm to drop into view when the pressure in the airbrake system of the truck becomes too low for the brakes to be reliably deployed.
 * 3)  A grade crossing signal with a swinging motion used to indicate an approaching train.
 * 4)  A signal sent by waving a flag to and fro.
 * 1)  A grade crossing signal with a swinging motion used to indicate an approaching train.
 * 2)  A signal sent by waving a flag to and fro.
 * 1)  A signal sent by waving a flag to and fro.
 * 1)  A signal sent by waving a flag to and fro.

Verb

 * 1) To move gently in one direction and then another; to wig or wiggle, to wag or waggle.
 * 2) An act of wigwagging.
 * 3) To oscillate between two states.
 * 4)  To send a signal by waving a flag to and fro.
 * 1) To oscillate between two states.
 * 2)  To send a signal by waving a flag to and fro.
 * 1) To oscillate between two states.
 * 2)  To send a signal by waving a flag to and fro.
 * 1) To oscillate between two states.
 * 2)  To send a signal by waving a flag to and fro.
 * 1)  To send a signal by waving a flag to and fro.

Adverb

 * 1) With a wigwagging or to-and-fro motion.