(written as G)in the United States, Canada, Australia, and New Zealand, a film rating that means that a film or video is suitable for anyone to watch
(written as G)a friend, peer. This all-purpose greeting used among black speakers (usually, but not necessarily, male) is probably an abbreviation of guy, although gangsta has been suggested as an alternative.
(written as G)a gram (of some illicit substance). The abbreviation is typically used in referring to cocaine, which is sold in grams.
(written as G)a friend, peer. The abbreviation (probably of ‘guy’) is used as a greeting between males, particularly in black street usage.