Castile

American  

[ka-steel] / kæˈstil /

noun

1. Spanish Castilla.  a former kingdom comprising most of Spain.

2. Also called Castile soap.  a variety of mild soap, made from olive oil and sodium hydroxide.

3. any hard soap made from fats and oils, often partly from olive oil.

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Castile British  

/ kæˈstiːl, kasˈtiʎa /

noun

1. a former kingdom comprising most of modern Spain: originally part of León, it became an independent kingdom in the 10th century and united with Aragon (1469), the first step in the formation of the Spanish state

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Example Sentences

Sunday's vote will be followed by regional elections in Andalusia, Aragon, and Castile and Leon during the first half of 2026.

From Barron's • Dec. 21, 2025

Castile and León is the most affected area, with local media station Radio 5 reporting on Monday that the air is "unbreathable" due to the smoke.

From BBC • Aug. 18, 2025

The elder Thompson became a Black Lives Matter activist following the police killing of his friend, Philando Castile, in suburban St. Paul in 2016.

From Seattle Times • Jun. 20, 2023

The Christian kingdoms of Portugal, Leon, Navarre, Castile, and Aragon held about three- fifths of the land.

From Textbooks • Apr. 19, 2023

He kept the minds of the barons of Castile occupied with this, so that, concentrating on that war, they did not consider rebellion.

From "The Prince" by Niccolò Machiavelli

Related Words

• detergent
• soapsuds