A large ravine often located near the door or porch of ones house, caused from the owner (or those who dwell within) by frequently pissing off it, due to laziness.
The pisswash outside Jeds shack was three feet wide.
"I gotsta piss, Ima make my pisswash a bit deeper now, homie"
Noun: an archaic device common to British railway station restrooms until the 1960's. The Pisswangle consists of wooden rollers turned by a crank operated by the Pisswangler or Pisswangle operator. The male genatalia is passed through the wangle thus squeezing out the last few drops of urine and preventing seepage into the pants.
"Lord Thistlewick hated dribbles of urine in his pants and always tipped the gent's room pisswangler at Victoria station handsomely."