Tewl

n.

An eejit. Tool, as said in a Waterford accent.

In use

Yer man is some tewl boy! He's as useless as a back pocket in a vest! We were lookin for a bit of work an' we passed by a sign that read: 'Tree Fellers Wanted,' so he turns 'round tew me and says, 'Pity dayer's owny tew of us!'

Let Lawrence Muck translate it to posh English for you
Lawrence Muck

Top of the morning. Or is that too common? Would you like me to translate 'Tewl' in use for you?

That fellow is an absolute fool, old boy! He is as useless as a back pocket on a vest! We were seeking work and passed a sign reading 'Tree Fellers Wanted', whereupon he turned to me and said, 'Pity there are only two of us!'