2 definitions by Cillian

A person who lacks the ability to think like a capable human, ie an idiot.

Derives from the fact that donuts have a hole in them, something is missing just like something is missing in their head.
Siphora is a donut.
by Cillian October 7, 2019
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another word for cans....usually involved in underage drinking
are you going having a few tins tonight?
by Cillian June 18, 2005
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