Illustration of castle
- 1 fortified approach
- 2 moat
- 3 drawbridge
- 4 ward
- 5 angle tower
- 6 donjon or keep
- 7 chapel
- 8 gallery
1
a
: a large fortified building or set of buildings
b
: a massive or imposing house
2
: a retreat safe against intrusion or invasion
3
castled; castling
ˈka-s(ə-)liŋ 
: to move a chess king two squares toward a rook and in the same move the rook to the square next past the king
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
Jeri Clausing, AFAR Media, 10 Apr. 2025
The show, hosted by actor Alan Cumming and set in a remote Scottish castle, features reality TV veterans and celebrities working together—and often deceiving each other—in challenges for a cash prize.
—Raja Krishnamoorthi, MSNBC Newsweek, 9 Apr. 2025
Tim Ellis, Forbes, 4 Mar. 2025
For example, pawns could not move two squares on their first turn, and there was no similar rule for castling.
—Dylan Loeb McClain, New York Times, 27 May 2023
See All Example Sentences for castle
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Noun
River cruise lines also sail from Paris to the beaches of Normandy on the Seine; along the ornate castles and vineyards of the scenic Loire Valley; and through Burgundy and Provence on the Rhône and Saône Rivers.
—Jeri Clausing, AFAR Media, 10 Apr. 2025
The show, hosted by actor Alan Cumming and set in a remote Scottish castle, features reality TV veterans and celebrities working together—and often deceiving each other—in challenges for a cash prize.
—Raja Krishnamoorthi, MSNBC Newsweek, 9 Apr. 2025
Verb
The proactive Axar Patel hit an aggressive 27 before being castled by Nathan Ellis.
—Tim Ellis, Forbes, 4 Mar. 2025
For example, pawns could not move two squares on their first turn, and there was no similar rule for castling.
—Dylan Loeb McClain, New York Times, 27 May 2023
See All Example Sentences for castle
Cite this Entry
“Castle.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/castle. Accessed 23 Apr. 2025.
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