Jeesh means army. The confusion is in the pronunciation. If you pronounce it like it is spelled in English, then it does indeed mean "piss". However the correct way to say it is more like "jay-eesh".

adjective expressing shock, surprise, or irritation. Is a mix of the words "jeez" and "sheesh".

a close group of friends

to be precise, "jeesh" means "pee" in farsi (aka Persian)

for piss, look up shosh

means "piss" in Farsi.
-or-
any fagnificent man you know.

A racial slur said by the Irish to attack whitey.