O.G.

1. See officer of the guard.

2. Archit. ogee.

3. Philately. See o.g. (def. 1).

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O.G.,

an abbreviation for the following:

1. officer of the guard.

2. ogee (molding).

3. Olympic Games.

4. Also, o.g. Philately. original gum (a stamp in mint condition with the original mucilage).

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OG, O.G.

contracted form of ogee.