Definitions from Wiktionary (Oncer)

▸ noun:  (informal, historical) A one-pound note.
▸ noun:  (poetic) A person who does something once.
▸ noun:  (informal) A single sexual encounter between two individuals, a one-night stand.
▸ noun:  (informal) A person with whom one shares a single sexual encounter, a one-night stand.
▸ noun:  (fandom slang) A fan of the television series Once Upon a Time.



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