- officer of the guard.
- Also O.G. Philately. original gum: the gum on the back of a stamp when it is issued to the public.
- Architecture. ogee.
- officer of the guard.
- Architecture. ogee.
- Philately. See o.g.(def 1).
abbreviation for
- officer of the guard
- Also: o.g philately original gum
abbreviation for
- own goal