Definition
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deartháir
Duine atá ag roinnt tuismitheoirí le duine eile.
A person who shares parents with another person.
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Is deartháir dom é.
He is my brother.
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Tá deartháir agam atá níos sine ná mise.
I have a brother who is older than me.
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Bhuail mé le deartháir mo chara inné.
I met my friend's brother yesterday.