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Stone fort in Irish (Caiseal): Meaning, Pronunciation, Usage

‘caiseal’ also means: stone wall · rook

The Irish for stone fort is caiseal, a masculine noun (plural caisil).
Updated October 2026Report a mistake

How to say “stone fort” in Irish

Irish:
caiseal
English:
stone fort, stone wall, rook
Word type:
noun
Gender:
masculine, first declension
Pronunciation:
“KASH-ul”  /ˈkaʃəlˠ/
Various forms
Plural:
caisil (stone forts)
Genitive singular:
caisil, an chaisil (e.g. balla an chaisil, the wall of the stone fort)
Genitive plural:
caiseal, na gcaiseal (e.g. fothracha na gcaiseal, the ruins of the stone forts)

What does “caiseal” mean?

“Caiseal” has three alternative meanings. The most common comes first.

stone fort
An ancient circular fort with a wall of stone, usually built without mortar.Also: cashel, ring fort, fort.
2 other meanings: stone wall or rook
2stone wall
A wall of stones built without mortar, especially a boundary wall around a church or graveyard.Also: dry wall, boundary wall, unmortared wall.
3rook
The chess piece shaped like a castle tower.Also: castle.

“Caiseal” with the article

The plural of stone fort in Irish is caisil. Here is caiseal after the article (an t-alt), in the singular and the plural.

an caiseal
the stone fort
No change after an
na caisil
the stone forts
Plural: no change after na

“Caiseal” in a sentence: Irish examples

Common Irish sentences using caiseal, the Irish word for stone fort.

Tá caiseal ársa ar bharr an chnoic.
There is an ancient stone fort on top of the hill.
Thógamar an caiseal le clocha gan moirtéal.
We built the wall with stones and no mortar.
Shiúlamar timpeall bhalla an chaisil.
We walked around the wall of the fort.
Tá go leor caisil le feiceáil sa cheantar seo.
There are plenty of stone forts to be seen in this area.
Bhí na páistí ag súgradh sa chaiseal.
The children were playing in the stone fort.
Chaill mé mo chaiseal go luath sa chluiche.
I lost my rook early in the game.
Tá an reilig istigh i gcaiseal cloiche.
The graveyard is enclosed by a stone wall.

Other nouns in Irish

More everyday Irish nouns to learn next.

Stone fort in Irish: frequently asked questions

What is the Irish for stone fort?

The Irish for stone fort is caiseal (pronounced “KASH-ul”). It’s a masculine noun and the plural is caisil. Depending on context it can also mean stone wall or rook.

How do you pronounce caiseal in Irish?

Caiseal is said like “KASH-ul” (IPA /ˈkaʃəlˠ/).

What is the plural of stone fort in Irish?

The plural of caiseal is caisil; with the article, na caisil means “the stone forts”. The genitive plural is caiseal, as in fothracha na gcaiseal (the ruins of the stone forts).

Does caiseal have more than one meaning?

Yes. Caiseal can mean stone fort, stone wall or rook, depending on context; the first is the most common.

Why does caiseal change to chaiseal or gcaiseal?

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

Is 'caiseal' the same as 'caisleán'?

No. A 'caiseal' is an early stone fort or dry stone wall, while a 'caisleán' is a castle, usually medieval. Both come from Latin castellum.

How does 'caiseal' differ from 'lios' or 'ráth'?

A 'lios' or 'ráth' is usually a ring fort with earthen banks, while a 'caiseal' has walls of stone.

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