Hello - I am getting a tattoo in a few weeks and would like to have my father's nickname put in it. His nickname was "nails"; plural for the metal carpentry nail - (as in tough as nails). I have found several translations and just want to make sure I have the correct form and spelling. I have these so far tairne, tairní, tairneaíl. Can anyone give me the correct version. I would also like the word for dad (is is daid)? Thank you.

What you're looking for is "Tairní".

Singluar: Tairne
Plural: Tairní

For your information, the nail on your finger is "ionga".

"Tairneáil" means "nailing" by the way.

For example "I saw the nailing of the plank of wood":

Chonaic mé tairneáil an chláir adhmaid.

Yes, the Irish for "Dad" is "Daid".

I gave the answer on another forum. I also corrected someone else's translation if memory serves me right.

As Fear na mBróg said:

(carpentry) Nails = Tairní