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Definition 2025

uillinn

uillinn

Irish

Noun

uillinn f ‎(genitive singular uillinne or uilne, nominative plural uilleannacha or uilneacha)

(anatomy) elbow
1. elbow-shaped bend; corner, angle
2. (mathematics) angle

Declension

Declension of uillinn

Second declension

Bare forms

Case	Singular	Plural
Nominative	uillinn	uilleannacha
Vocative	a uillinn	a uilleannacha
Genitive	uillinne	uilleannacha
Dative	uillinn	uilleannacha

Forms with the definite article

Case	Singular	Plural
Nominative	an uillinn	na huilleannacha
Genitive	na huillinne	na n-uilleannacha
Dative	leis an uillinn don uillinn	leis na huilleannacha

Alternative declension

Declension of uillinn

Second declension

Bare forms

Case	Singular	Plural
Nominative	uillinn	uilnacha
Vocative	a uillinn	a uilnacha
Genitive	uilne	uilnacha
Dative	uillinn	uilnacha

Forms with the definite article

Case	Singular	Plural
Nominative	an uillinn	na huilnacha
Genitive	na huilne	na n-uilnacha
Dative	leis an uillinn don uillinn	leis na huilnacha

Usage notes

The normal genitive is uillinne, but in certain contexts it is uilleann.

Derived terms

Terms derived from uillinn

an uillinn a thabhairt do dhuine ‎(“to elbow, nudge, someone”)
ar uillinn (duine) ‎(“at (someone)'s elbow”)
bíomal uillinne m ‎(“angle-brace”)
iarann uillinne m ‎(“angle-iron”)

píb uilleann f ‎(“uilleann pipes”)
uillinn airde f ‎(“angle of elevation”)
uillinn ar bhóthar f ‎(“sharp turn, elbow, in road”)
uillinn ar uillinn, in uillinn a chéile ‎(“arm in arm”)

uillinn istigh f ‎(“interior angle”)
uillinn píopa f ‎(“elbow of pipe”)
uillinn teagmhála f ‎(“contact angle”)
uillinn theorantach f ‎(“limiting angle”)

Mutation

Irish mutation
Radical	Eclipsis	with h-prothesis	with t-prothesis
uillinn	n-uillinn	huillinn	t-uillinn
Note: Some of these forms may be hypothetical. Not every possible mutated form of every word actually occurs.

References

"uillinn" in Foclóir Gaeilge-Béarla, An Gúm, 1977, by Niall Ó Dónaill.
“uilen” in Dictionary of the Irish Language, Royal Irish Academy, 1913–76.