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Axle in Irish (Acastóir): Meaning, Pronunciation, Usage

The Irish for axle is acastóir, a masculine noun (plural acastóirí).
Updated October 2026Report a mistake

How to say “axle” in Irish

Irish:
acastóir
English:
axle
Word type:
noun
Gender:
masculine, third declension
Pronunciation:
“AK-us-tohr”  /ˈakəsˠt̪ˠoːɾʲ/
Various forms
Plural:
acastóirí (axles)
Genitive singular:
acastóra, an acastóra (e.g. lár an acastóra, the middle of the axle)
Genitive plural:
acastóirí, na n-acastóirí (e.g. líon na n-acastóirí, the number of axles)

What does “acastóir” mean?

axle
The rod or shaft on which a wheel turns, as on a cart or car.Also: axletree, shaft, wheel axle.

“Acastóir” with the article

The plural of axle in Irish is acastóirí. Here is acastóir after the article (an t-alt), in the singular and the plural.

an t-acastóir
the axle
Masculine nouns take t before a vowel after an
na hacastóirí
the axles
Plural: na adds h before a vowel

“Acastóir” in a sentence: Irish examples

Common Irish sentences using acastóir, the Irish word for axle.

Bhris an t-acastóir faoin gcairt.
The axle broke under the cart.
Tá acastóir nua ag teastáil ón leoraí.
The lorry needs a new axle.
Cuir ola ar an acastóir.
Put oil on the axle.
Tá dhá acastóir ar an gcarr seo.
This car has two axles.
Tá ceithre acastóir ar an leoraí mór sin.
That big lorry has four axles.
Bhí meirg ar cheann an acastóra.
There was rust on the end of the axle.
Casann an roth thart ar an acastóir.
The wheel turns around the axle.

Other nouns in Irish

More everyday Irish nouns to learn next.

Axle in Irish: frequently asked questions

What is the Irish for axle?

The Irish for axle is acastóir (pronounced “AK-us-tohr”). It’s a masculine noun and the plural is acastóirí.

How do you pronounce acastóir in Irish?

Acastóir is said like “AK-us-tohr” (IPA /ˈakəsˠt̪ˠoːɾʲ/).

What is the plural of axle in Irish?

The plural of acastóir is acastóirí; with the article, na hacastóirí means “the axles”. The genitive plural is acastóirí, as in líon na n-acastóirí (the number of axles).

Why does acastóir sometimes have a t or h in front of it?

Irish nouns beginning with a vowel take a prefix after certain words: an t-acastóir (the axle), a hacastóir (her axle), a n-acastóir (their axle), na hacastóirí (the axles).

Is 'acastóir' the same as 'fearsaid'?

Both can mean axle or shaft, but 'acastóir' is the usual word for a vehicle or cart axle, while 'fearsaid' is more often a spindle or shaft.

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