One of the mysteries of the English language finally explained.
In the Ottoman Empire and Turkey: a room or chamber; specifically (now historical) (a) the barracks of the janissaries; (b) a room in a harem; (also, in extended use) the women in a harem collectively.
Early 17th century; earliest use found in Samuel Purchas. From Turkish oda room, chamber, (also) janizary barracks (now hist.), probably from Old Turkish ōd fire.
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