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Hill in Irish (Cnoc): Meaning, Pronunciation, Usage

‘cnoc’ also means: heap

The Irish for hill is cnoc, a masculine noun (plural cnoic).
Updated October 2026Report a mistake

How to say “hill” in Irish

Irish:
cnoc
English:
hill, heap
Word type:
noun
Gender:
masculine, first declension
Pronunciation:
“knuk”  /kn̪ˠʊk/
Various forms
Plural:
cnoic (hills)
Genitive singular:
cnoic, an chnoic (e.g. barr an chnoic, top of the hill)
Genitive plural:
cnoc, na gcnoc (e.g. muintir na gcnoc, the people of the hills)

What does “cnoc” mean?

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

hill
A raised area of land, smaller and lower than a mountain.Also: mount, hillock, height.
1 other meaning: heap
2heap
A large pile or great amount of something, used figuratively.Also: pile, mound.

“Cnoc” with the article

The plural of hill in Irish is cnoic. Here is cnoc after the article (an t-alt), in the singular and the plural.

an cnoc
the hill
No change after an
na cnoic
the hills
Plural: no change after na

“Cnoc” in a sentence: Irish examples

Common Irish sentences using cnoc, the Irish word for hill.

Tá an teach ag barr an chnoic.
The house is at the top of the hill.
Shiúlamar suas an cnoc inné.
We walked up the hill yesterday.
Tá cnoc ard taobh thiar den sráidbhaile.
There is a high hill behind the village.
Bhí ceo ar na cnoic ar maidin.
There was fog on the hills this morning.
Tá caoirigh ag innilt ar an gcnoc.
Sheep are grazing on the hill.
Is breá liom an radharc ó bharr an chnoic.
I love the view from the top of the hill.
Rith na páistí síos le fána an chnoic.
The children ran down the slope of the hill.

Other nouns in Irish

More everyday Irish nouns to learn next.

Hill in Irish: frequently asked questions

What is the Irish for hill?

The Irish for hill is cnoc (pronounced “knuk”). It’s a masculine noun and the plural is cnoic. Depending on context it can also mean heap.

How do you pronounce cnoc in Irish?

Cnoc is said like “knuk” (IPA /kn̪ˠʊk/).

What is the plural of hill in Irish?

The plural of cnoc is cnoic; with the article, na cnoic means “the hills”. The genitive plural is cnoc, as in muintir na gcnoc (the people of the hills).

Does cnoc have more than one meaning?

Yes. Cnoc can mean hill or heap, depending on context; the first is the most common.

Why does cnoc change to chnoc or gcnoc?

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

What is the difference between cnoc and sliabh?

A cnoc is a hill, while a sliabh is a mountain or high moorland. Many Irish place names use both, such as Cnoc Mhuire and Sliabh Dónairt.

Why do so many Irish place names start with 'Knock'?

'Knock' is the anglicised form of cnoc, so Knock in Mayo is Cnoc Mhuire, 'Mary's hill'.

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