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definitions

o.g.

  1. Also O.G. Philately. original gum: the gum on the back of a stamp when it is issued to the public.
  2. Architecture. ogee.

O.G.

  1. officer of the guard.
  2. Architecture. ogee.
  3. Philately. See o.g.(def 1).
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
British Dictionary definitions for o.g.

o.g.

abbreviation for
  1. own goal
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012