cas·​tle | \ ˈka-səl How to pronounce castle (audio) \

Definition of castle

 (Entry 1 of 2)

1a : a large fortified building or set of buildings
b : a massive or imposing house
2 : a retreat safe against intrusion or invasion


castled; castling\ ˈka-​s(ə-​)liŋ How to pronounce castle (audio) \

Definition of castle (Entry 2 of 2)

transitive verb

1 : to establish in a castle
2 : to move (the chess king) in castling

intransitive verb

: to move a chess king two squares toward a rook and in the same move the rook to the square next past the king

Illustration of castle

Illustration of castle


castle 1a: 1 fortified approach, 2 moat, 3 drawbridge, 4 ward, 5 angle tower, 6 donjon or keep, 7 chapel, 8 gallery

In the meaning defined above

Examples of castle in a Sentence

Noun Millionaires built their castles along the lake. the implacable attackers placed the castle under a prolonged siege
Recent Examples on the Web: Noun According to Tatler, after church, the royals typically enjoy a lunch of roast lamb back at the castle. Caroline Hallemann, Town & Country, 17 Apr. 2022 Visitors who secure an invitation from an academy member can dine, drink and watch magic acts at the castle. Roger Vincentstaff Writer, Los Angeles Times, 11 Apr. 2022 Among the most recent was a wedding at a castle with a major pop act — and that’s all CEO Bonnie May can say about it. David Browne, Rolling Stone, 2 Apr. 2022 The Queen, who is widely reported to be fully vaccinated, is not alone in having tested positive for the coronavirus as a number of Royal Household members based at the castle have also done so, PEOPLE understands. Shafiq Najib,, 20 Feb. 2022 The Crawleys are going slightly meta for Focus Features’ Downton Abbey movie sequel, which features a major storyline about a film being shot at the castle. Alex Ritman, The Hollywood Reporter, 15 Feb. 2022 The Queen is at the castle – a one-hour drive west of central London – with her son Prince Charles and his wife, Camilla, as well as Prince Edward and his wife, Sophie. Rebecca Rosenberg, Fox News, 26 Dec. 2021 However, the queen's son and heir, Prince Charles, and his wife, Duchess Camilla of Cornwall, will join her at the castle for lunch, the Prince of Wales' office at Clarence House confirmed. Brian Truitt, USA TODAY, 25 Dec. 2021 Looking for her roots, a woman goes to Ireland at Christmas, where in a case of mistaken identity she's hired to plan a holiday party at a castle., 18 Nov. 2021 Recent Examples on the Web: Verb After your tour, strip to your bathing suit and spend the rest of the day swimming, sand-castling, and sunning. Hadley Meares, Los Angeles Magazine, 14 May 2018 This is the real point of the combination as now Black will not be able to castle and White can pretty much at his leisure, build up an attack. Chris Chase,, 27 May 2018 After your tour, strip to your bathing suit and spend the rest of the day swimming, sand-castling, and sunning. Hadley Meares, Los Angeles Magazine, 14 May 2018 Now Black cannot castle kingside after Be3 and Qd2.) Michael Ciamarra,, 11 June 2017 Jasper Hall of Fame Classic Lake Central 15, Castle 2 Castle 100 01 — 2 6 2 Lake Central 058 2x — 15 7 0 WP: Zack Dobbs 5 IP, 5 SO. Lake Central 10, Jasper 3 Lake Central 204 102 1 — 10 8 2 Jasper 011 010 0 — 3 6 3 WP: Jason Lamont 5 IP, 4 SO. Post-Tribune, 13 May 2017 See More

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'castle.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of castle


before the 12th century, in the meaning defined at sense 1a


1587, in the meaning defined at transitive sense 1

History and Etymology for castle


Middle English castel, from Old English, from Old French & Latin; Old French dialect (Norman-Picard) castel, from Latin castellum fortress, diminutive of castrum fortified place; perhaps akin to Latin castrare to castrate

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Time Traveler for castle

Time Traveler

The first known use of castle was before the 12th century

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Dictionary Entries Near castle

cast-iron plant



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Last Updated

7 May 2022

Cite this Entry

“Castle.” Dictionary, Merriam-Webster, Accessed 16 May. 2022.

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More Definitions for castle


cas·​tle | \ ˈka-səl How to pronounce castle (audio) \

Kids Definition of castle

1 : a large building or group of buildings usually having high walls with towers that was built in the past to protect against attack
2 : a large or impressive house

More from Merriam-Webster on castle

Nglish: Translation of castle for Spanish Speakers

Britannica English: Translation of castle for Arabic Speakers Encyclopedia article about castle


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