medieval Spanish county and soon after kingdom, from Vulgar Latin castilla, from Latin castella, plural of castellum "palace, fort, citadel, stronghold" (see castle (letter.)); so called in reference to the numerous fortified locations truth be told there during the Moorish wars. Title in Spanish is believed to date back into c.800. Relevant: Castilian. As a superb style of detergent, in English from 1610s.
an area of main Spain; a former kingdom that comprised almost all of modern Spain and united with Aragon to make Spain in 1479
Of Castile by a typical piece of flighty oriental barbarity.