E. Cobham Brewer 18101897. Dictionary of Phrase and Fable. 1898.
Medina.
(Economy, Latin medium, the golden mean.) Step-sister of Elissa and Perissa, but they could never agree upon any subject. (Spenser: Faërie Queene, book ii.)
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Medina means in Arabic city. The city so called is Medinat al Nabi (city of the prophet).