Green Light

Technology / Aviation / Green Light: Approval for landing. A carryover expression from days when aircraft for the most part had no radios, and communication from a control tower was by means of a light-gun that beamed various green, red, and yellow signals to pilots in the air and on the ground. A popular phrase, '3 green lights,' refers to the instrument panel lights verifying that all three gears (in a tri-gear aircraft) are down and locked for safe landing.

Other Words for Green

Green Adjective Synonyms: verdant, grassy, fresh, leafy, rural, country-like
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Other Words for Light

Light Verb Synonyms: turn on, switch on, put on
Light Adjective Synonyms: ignite, set alight, set or put a match to, kindle, burn, touch off, set fire to, fire
Light Noun Synonyms: illumination, brightness, daylight, lamplight, candlelight, firelight, gaslight, torchlight, starlight, moonlight, sunlight, gegenschein, counterglow
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Red Light

Entertainment / Ice Hockey / Red Light: A light behind the goal cage, next to the green light, that is turned on by the goal judge to indicate that a goal has been scored. MORE

Navigation Lights

Technology / Aviation / Navigation Lights: lights on the aircraft consisting of a red light on the left wing, a green light on the right wing, and a white light on the tail. FARs require that these lights be displayed in flight during the hour MORE

Goal Light

Entertainment / Ice Hockey / Goal Light: A light behind the goal cage, next to the green light, that is turned on by the goal judge to indicate that a goal has been scored. MORE

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