lily and gish Posted in L Best definition lily and gish a scottish rhyming slang term for needing the toilet. i.e. pish rhymes with gish ma maws got a dick aww man am chokin oan a lily and gish, ma back teeth ur floatin here How satisfied are you with the definition? Looking for lily and gish meaning? Delighted that you discovered the greatest determine on our web site! Recently this definition was actually observed 66 times.