Top definition
a good old fashioned piss!
originates from the Shetland Isles.
a non offensive slang term.
very descriptive indeed.
oh holy hell...am gonna have to go and greth!

Jim: where you off to Frank?
Frank: goin to greth.
by Buffy Irvine June 14, 2011
Get the mug
Get a greth mug for your friend Jovana.