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Castle in Irish (Caistéal): Meaning, Pronunciation, Usage

‘caistéal’ also means: castle (chess)

The Irish for castle is caistéal, a masculine noun (plural caistéil).
Updated October 2026Report a mistake

How to say “castle” in Irish

Irish:
caistéal
English:
castle, castle (chess)
Word type:
noun
Gender:
masculine
Pronunciation:
“KASH-tyayl”  /ˈkaʃtʲeːl/
Various forms
Plural:
caistéil (castles)
Genitive singular:
caistéil, an chaistéil (e.g. ballaí an chaistéil, the walls of the castle)
Genitive plural:
caistéal, na gcaistéal (e.g. stair na gcaistéal, the history of the castles)

What does “caistéal” mean?

“Caistéal” has two alternative meanings. The most common comes first.

castle
A large fortified building with thick stone walls, built in the past to defend against attack.Also: fortress, keep, stronghold.
1 other meaning: castle (chess)
2castle (chess)
The chess piece also called a rook, which moves in straight lines.Also: rook, castle, chess piece.

Other Irish words for castle: caisleán (castle)

“Caistéal” with the article

The plural of castle in Irish is caistéil. Here is caistéal after the article (an t-alt), in the singular and the plural.

an caistéal
the castle
No change after an
na caistéil
the castles
Plural: no change after na

“Caistéal” in a sentence: Irish examples

Common Irish sentences using caistéal, the Irish word for castle.

Tá caistéal mór ar an gcnoc.
There is a big castle on the hill.
Thugamar cuairt ar an gcaistéal inné.
We visited the castle yesterday.
Tá túr an chaistéil an-ard.
The castle tower is very tall.
Tá go leor caistéal sa tír seo.
There are lots of castles in this country.
Chónaigh an tiarna sa chaistéal sin fadó.
The lord lived in that castle long ago.
Thóg na páistí caistéal gainimh ar an trá.
The children built a sandcastle on the beach.

Other nouns in Irish

More everyday Irish nouns to learn next.

Castle in Irish: frequently asked questions

What is the Irish for castle?

The Irish for castle is caistéal (pronounced “KASH-tyayl”). It’s a masculine noun and the plural is caistéil. Depending on context it can also mean castle (chess).

How do you pronounce caistéal in Irish?

Caistéal is said like “KASH-tyayl” (IPA /ˈkaʃtʲeːl/).

What is the plural of castle in Irish?

The plural of caistéal is caistéil; with the article, na caistéil means “the castles”. The genitive plural is caistéal, as in stair na gcaistéal (the history of the castles).

Does caistéal have more than one meaning?

Yes. Caistéal can mean castle or castle (chess), depending on context; the first is the most common.

Why does caistéal change to chaistéal or gcaistéal?

Irish changes the start of some words after certain words. After mo (my) caistéal becomes mo chaistéal (lenition), and after ár (our) or i (in) it becomes ár gcaistéal (eclipsis).

What is the difference between caistéal and caisleán?

Both mean castle; caisleán is the more common, traditional word, while caistéal is a less common variant, also used for the rook in chess.

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