what is the og
1 Og, an ancient Amorite king of Bashan. 2  Olive green, a common colour in military use. 3  One-Two-GO Airlines (IATA airline code: OG) 4  Original gangster (disambiguation), various meanings derived from a slang term for a veteran gang member. 5  Original Gangsters (gang), a Swedish gang.  River Og, a river in Wiltshire, England.