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Caterpillar in Irish (Bolb): Meaning, Pronunciation, Usage

The Irish for caterpillar is bolb, a masculine noun (plural boilb).
Updated October 2026Report a mistake

How to say “caterpillar” in Irish

Irish:
bolb
English:
caterpillar
Word type:
noun
Gender:
masculine, first declension
Pronunciation:
“bol-uhb”  /bˠɔləbˠ/
Various forms
Plural:
boilb (caterpillars)
Genitive singular:
boilb, an bhoilb (e.g. dath an bhoilb, the colour of the caterpillar)
Genitive plural:
bolb, na mbolb (e.g. plá na mbolb, the plague of caterpillars)

What does “bolb” mean?

caterpillar
A caterpillar, the worm-like larva of a butterfly or moth.Also: larva, grub.

“Bolb” with the article

The plural of caterpillar in Irish is boilb. Here is bolb after the article (an t-alt), in the singular and the plural.

an bolb
the caterpillar
No change after an
na boilb
the caterpillars
Plural: no change after na

“Bolb” in a sentence: Irish examples

Common Irish sentences using bolb, the Irish word for caterpillar.

Tá bolb mór glas ar an duilleog.
There's a big green caterpillar on the leaf.
D'ith an bolb na duilleoga cabáiste go léir.
The caterpillar ate all the cabbage leaves.
Féach ar chosa beaga an bhoilb.
Look at the caterpillar's little legs.
Bíonn boilb sa ghairdín gach samhradh.
There are caterpillars in the garden every summer.
Fuair mé bolb i mo shailéad!
I found a caterpillar in my salad!
Déantar féileacán den bholb ar ball.
The caterpillar later becomes a butterfly.
Chonaic na páistí na boilb ag snámh ar an gcrann.
The children saw the caterpillars crawling on the tree.

Other nouns in Irish

More everyday Irish nouns to learn next.

Caterpillar in Irish: frequently asked questions

What is the Irish for caterpillar?

The Irish for caterpillar is bolb (pronounced “bol-uhb”). It’s a masculine noun and the plural is boilb.

How do you pronounce bolb in Irish?

Bolb is said like “bol-uhb” (IPA /bˠɔləbˠ/).

What is the plural of caterpillar in Irish?

The plural of bolb is boilb; with the article, na boilb means “the caterpillars”. The genitive plural is bolb, as in plá na mbolb (the plague of caterpillars).

Why does bolb change to bholb or mbolb?

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

What is the difference between bolb and péist?

Bolb is specifically a caterpillar, the larva of a butterfly or moth, while péist is a general word for a worm or creeping creature.

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