Dictionary![]() ![]() O.G.1. See officer of the guard. 2. Archit.ogee. 3. Philately.See o.g. (def. 1). 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. Archit.ogee. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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