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Jack in Irish (Seaca): Meaning, Pronunciation, Usage

The Irish for jack is seaca, a masculine noun (plural seacaí).
Updated October 2026Report a mistake

How to say “jack” in Irish

Irish:
seaca
English:
jack
Word type:
noun
Gender:
masculine
Pronunciation:
“SHAK-uh”  /ˈʃakə/
Various forms
Plural:
seacaí (jacks)
Genitive singular:
seaca, an tseaca (e.g. lámh an tseaca, the handle of the jack)
Genitive plural:
seacaí, na seacaí (e.g. praghas na seacaí, the price of the jacks)

What does “seaca” mean?

jack
A mechanical device used to lift a heavy object, such as a car, a short distance off the ground.Also: car jack, lifting jack, hydraulic jack.

“Seaca” with the article

The plural of jack in Irish is seacaí. Here is seaca after the article (an t-alt), in the singular and the plural.

an seaca
the jack
No change after an
na seacaí
the jacks
Plural: no change after na

“Seaca” in a sentence: Irish examples

Common Irish sentences using seaca, the Irish word for jack.

An bhfuil seaca agat sa charr?
Do you have a jack in the car?
Chuir sé an seaca faoin gcarr.
He put the jack under the car.
Tá lámh an tseaca briste.
The handle of the jack is broken.
Díoltar seacaí sa gharáiste sin.
Jacks are sold in that garage.
Thug mé mo sheaca ar iasacht do Sheán.
I lent my jack to Seán.
Coinním seaca i gcónaí i mbút an chairr.
I always keep a jack in the boot of the car.
Ardaigh an carr leis an seaca go cúramach.
Raise the car carefully with the jack.

Other nouns in Irish

More everyday Irish nouns to learn next.

Jack in Irish: frequently asked questions

What is the Irish for jack?

The Irish for jack is seaca (pronounced “SHAK-uh”). It’s a masculine noun and the plural is seacaí.

How do you pronounce seaca in Irish?

Seaca is said like “SHAK-uh” (IPA /ˈʃakə/).

What is the plural of jack in Irish?

The plural of seaca is seacaí; with the article, na seacaí means “the jacks”. The genitive plural is seacaí, as in praghas na seacaí (the price of the jacks).

Why does seaca change to sheaca?

After words like mo (my) and do (your) the first letter is lenited: mo sheaca. After ár (our) it stays ár seaca, because s does not take eclipsis.

Is 'seaca' the same word as the genitive of 'sioc'?

No. 'Seaca' as a headword means a lifting jack; separately, 'seaca' is also the genitive of 'sioc' (frost), as in 'oíche sheaca' (a frosty night).

Does 'seaca' mean the jack in a deck of cards?

No, the jack in cards is 'cuireata'; 'seaca' is the tool for lifting a car.

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