What does the word 'tool' mean in UK/Irish slang?

Idiot; moron.

Something along those lines. You tool!

Dominant, Couragous, Fierce, Super. Try a thesaurus or google for an online one if you don't own one.

It depends on what way the sentence is going Sunshine

But most of the above answers have hit the nail on the head so to speak. Pardon the Pun.

Willie or Jerk would be my answer

A spanner (wrench) is a tool but it doesn't have a brain so it doesn't know it's being used

So when you call someone a tool it means you think they're so dumb they wouldn't even know when they're being used

In OZ=idiot,moron,wanker etc. but can also be a blokes tool(penis).

Yes it's a guy who is somewhat a jerk.

An eejit

It's another word for a prick which is also a man's dangly bits or penis.

have u ever heard of tool academy on vh1

http://www.urbandictionary.com/define.php?term=too...