Scottish for shit house. A dirty or dilapidated house or building or even larger area such as a town city or country. It is never used in reference to a toilet. Can also mean an inadequate business or related premises.
Can be pronounced as shite-eroon or shit-eroon. Like a macaroon but full of shit. So if your friends are screwing you over, you could say they're feeding you shiteroons, or a shiteroon.
Dude: Man that person is really screwing you over.
Bro: I know she's been feeding me shiteroons. Sooner or later I'm gonna have to stop eating them.