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Flask in Irish (Flaigín): Meaning, Pronunciation, Usage

‘flaigín’ also means: vacuum flask

The Irish for flask is flaigín, a masculine noun (plural flaigíní).
Updated October 2026Report a mistake

How to say “flask” in Irish

Irish:
flaigín
English:
flask, vacuum flask
Word type:
noun
Gender:
masculine, fourth declension
Pronunciation:
“FLAG-een”  /ˈfˠlˠaɡʲiːnʲ/
Various forms
Plural:
flaigíní (flasks)
Genitive singular:
flaigín, an fhlaigín (e.g. claibín an fhlaigín, the lid of the flask)
Genitive plural:
flaigíní, na bhflaigíní (e.g. claibíní na bhflaigíní, the lids of the flasks)

What does “flaigín” mean?

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

flask
A small flat bottle, often carried in a pocket, for holding drink.Also: hip flask, small bottle, pocket flask.
1 other meaning: vacuum flask
2vacuum flask
A container that keeps hot drinks hot or cold drinks cold.Also: thermos, flask.

Other Irish words for flask: buidéal (bottle), fleasc (flask), fleascán (flask)

“Flaigín” with the article

The plural of flask in Irish is flaigíní. Here is flaigín after the article (an t-alt), in the singular and the plural.

an flaigín
the flask
No change after an
na flaigíní
the flasks
Plural: no change after na

“Flaigín” in a sentence: Irish examples

Common Irish sentences using flaigín, the Irish word for flask.

Tá flaigín tae agam sa mhála.
I have a flask of tea in the bag.
Líon sé an flaigín le huisce.
He filled the flask with water.
Cá bhfuil claibín an fhlaigín?
Where is the lid of the flask?
Cheannaíomar dhá fhlaigín nua inné.
We bought two new flasks yesterday.
D'fhág mé mo fhlaigín ar an mbus.
I left my flask on the bus.
Bhí caife te i bhflaigín aici.
She had hot coffee in a flask.
Tá na flaigíní ar an tseilf.
The flasks are on the shelf.

Other nouns in Irish

More everyday Irish nouns to learn next.

Flask in Irish: frequently asked questions

What is the Irish for flask?

The Irish for flask is flaigín (pronounced “FLAG-een”). It’s a masculine noun and the plural is flaigíní. Depending on context it can also mean vacuum flask.

How do you pronounce flaigín in Irish?

Flaigín is said like “FLAG-een” (IPA /ˈfˠlˠaɡʲiːnʲ/).

What is the plural of flask in Irish?

The plural of flaigín is flaigíní; with the article, na flaigíní means “the flasks”. The genitive plural is flaigíní, as in claibíní na bhflaigíní (the lids of the flasks).

Does flaigín have more than one meaning?

Yes. Flaigín can mean flask or vacuum flask, depending on context; the first is the most common.

Why does flaigín change to fhlaigín or bhflaigín?

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

What is the difference between flaigín and fleasc?

Both can mean flask, but flaigín is the usual everyday word for a small flask, while fleasc can also mean a wreath or a rod.

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