Define Swillin' Meaning

Just drinking on something,anything

A variation of chillin'
Or simply, cool, awesome, Illin'

Swill / swilling- Another word for going for a beer,
E.G , ay up me old sausage, you coming for a swill down Windsor?

Or,
'Baaa eck my farts stink today, must of had a bad pint last night while down Windsor swilling ' .