HeyRua Get the app

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

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

How to say “jack” in Irish

Irish:
seac
English:
jack
Word type:
noun
Gender:
masculine, first declension
Pronunciation:
“shak”  /ʃak/
Various forms
Plural:
seaic (jacks)
Genitive singular:
seaic, an tseaic (e.g. lámh an tseaic, the handle of the jack)
Genitive plural:
seac, na seac (e.g. lámha na seac, the handles of the jacks)

What does “seac” mean?

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

jack
A device for lifting a heavy object such as a car a short distance off the ground.Also: car jack, lifting jack.
1 other meaning:
2jack
A playing card showing a young man, ranking between the ten and the queen; also called the knave.Also: knave.

“Seac” with the article

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

an seac
the jack
No change after an
na seaic
the jacks
Plural: no change after na

“Seac” in a sentence: Irish examples

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

An bhfuil seac sa charr agat?
Do you have a jack in the car?
Chuir sé an seac faoin gcarr.
He put the jack under the car.
Bhris lámh an tseaic orm.
The handle of the jack broke on me.
Tá dhá sheac sa gharáiste.
There are two jacks in the garage.
D'fhág mé mo sheac sa bhaile.
I left my jack at home.
Tá an seac i gcúl an chairr.
The jack is in the back of the car.
Bhí seac hart agam sa lámh.
I had the jack of hearts in my hand.

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 seac (pronounced “shak”). It’s a masculine noun and the plural is seaic.

How do you pronounce seac in Irish?

Seac is said like “shak” (IPA /ʃak/).

What is the plural of jack in Irish?

The plural of seac is seaic; with the article, na seaic means “the jacks”. The genitive plural is seac, as in lámha na seac (the handles of the jacks).

Why does seac change to sheac?

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

Is 'seac' used for the playing card as well as the car tool?

Yes, 'seac' can mean the jack in cards, though 'cuireata' is the traditional word for the knave.

Learn Irish by
actually speaking it

Learn everyday Irish words like seac through guided conversation with Rua.

7-day free trial. Cancel anytime.

The HeyRua app home screen