green light

== English == === Etymology === From the standard red-green color scheme used in traffic lights and railway signals. === Pronunciation === === Noun === green light (plural green lights) A traffic light in its green state (indicating that vehicles may proceed). (idiomatic) Approval, or permission to proceed. Synonym: go (slang) A go-ahead to commit a crime, specifically to carry out a hit on someone (i.e. to kill). ==== Holonyms ==== ==== Coordinate terms ==== ==== Derived terms ==== ==== Translations ==== ==== See also ====