green box English

Meaning green box meaning

What does green box mean?

green box noun

— (now, historical) An upper box in a theatre. [from 18th c.]

— A class of subsidies allowed by the World Trade Organization understood to cause minimal disruption to trade. [from 20th c.]

— A device used in phreaking to produce various tones (coin collect, coin return, and ringback) that allow illicit control of a payphone.