RhymeZone: oe definitions

Definitions of oe:

noun: (literary or poetic, rare) A small island.
noun: A grandchild.
noun: (linguistics) Initialism of Old English. [(linguistics, historical) The ancestor language of Modern English, also called Anglo-Saxon, spoken in most of Britain from about 400 to 1100.]
noun: (New Zealand) Initialism of Overseas Experience.
noun: (computing) Initialism of Outlook Express.

(Definitions from Wiktionary)