the green light

: of the color green

: covered by green growth or foliage

: mild, clement

: to become green

: to make green

: rejuvenate, revitalize

: a color whose hue is somewhat less yellow than that of growing fresh grass or of the emerald or is that of the part of the spectrum lying between blue and yellow

: something of a green color

: green vegetation: such as

: something that makes vision possible

: the sensation aroused by stimulation of the visual receptors

: electromagnetic radiation of any wavelength that travels in a vacuum with a speed of 299,792,458 meters (about 186,000 miles) per second

: having light : bright

: not dark, intense, or swarthy in color or coloring : pale

: medium in saturation and high in lightness

: to become light : brighten

: to take fire

: to ignite something (such as a cigarette)

: having little weight : not heavy

: designed to carry a comparatively small load

: having relatively little weight in proportion to bulk

: lightly

: with little baggage

: dismount

: settle, alight

: to fall unexpectedly