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T-square in Irish (Crosbhacart): Meaning, Pronunciation, Usage

The Irish for t-square is crosbhacart, a masculine noun (plural crosbhacairt).
Updated October 2026Report a mistake

How to say “t-square” in Irish

Irish:
crosbhacart
English:
t-square
Word type:
noun
Gender:
masculine
Pronunciation:
“KROS-vak-urt”  /ˈkɾˠɔsˌwakəɾˠt̪ˠ/
Various forms
Plural:
crosbhacairt (t-squares)
Genitive singular:
crosbhacairt, an chrosbhacairt (e.g. faobhar an chrosbhacairt, the edge of the T-square)
Genitive plural:
crosbhacart, na gcrosbhacart (e.g. faobhair na gcrosbhacart, the edges of the T-squares)

What does “crosbhacart” mean?

t-square
A T-shaped ruler used in technical drawing to draw straight horizontal lines and right angles.Also: tee square, drawing square, drafting ruler.

“Crosbhacart” with the article

The plural of t-square in Irish is crosbhacairt. Here is crosbhacart after the article (an t-alt), in the singular and the plural.

an crosbhacart
the t-square
No change after an
na crosbhacairt
the t-squares
Plural: no change after na

“Crosbhacart” in a sentence: Irish examples

Common Irish sentences using crosbhacart, the Irish word for t-square.

Tá crosbhacart ag teastáil uaim don rang líníochta.
I need a T-square for the drawing class.
Leag an crosbhacart ar imeall an bhoird.
Lay the T-square along the edge of the board.
Bhris ceann an chrosbhacairt inné.
The head of the T-square broke yesterday.
Tá na crosbhacairt sa chófra sa seomra ranga.
The T-squares are in the cupboard in the classroom.
D'fhág mé mo chrosbhacart ar an mbus.
I left my T-square on the bus.
Tarraing an líne le crosbhacart, le do thoil.
Draw the line with a T-square, please.
Bhí scríob mhór ar an gcrosbhacart nua.
There was a big scratch on the new T-square.

Other nouns in Irish

More everyday Irish nouns to learn next.

T-square in Irish: frequently asked questions

What is the Irish for t-square?

The Irish for t-square is crosbhacart (pronounced “KROS-vak-urt”). It’s a masculine noun and the plural is crosbhacairt.

How do you pronounce crosbhacart in Irish?

Crosbhacart is said like “KROS-vak-urt” (IPA /ˈkɾˠɔsˌwakəɾˠt̪ˠ/).

What is the plural of t-square in Irish?

The plural of crosbhacart is crosbhacairt; with the article, na crosbhacairt means “the t-squares”. The genitive plural is crosbhacart, as in faobhair na gcrosbhacart (the edges of the T-squares).

Why does crosbhacart change to chrosbhacart or gcrosbhacart?

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

How is 'crosbhacart' different from 'rialóir'?

A 'rialóir' is an ordinary straight ruler, while a 'crosbhacart' is the T-shaped square used against a drawing board in technical drawing.

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