piss / pis/ vulgar slang • v. [intr.] urinate. ∎ [tr.] wet with urine. ∎ [tr.] discharge (something, esp. blood) when urinating.• n. urine. ∎ [in sing.] an act of urinating.PHRASES: not have a pot to piss in be very poor.piss in the wind do something that is ineffective or a waste of time.take a piss urinate.PHRASAL VERBS: piss something away waste something, esp. money or time.piss off [usu. in imper.] go away (usually used to angrily dismiss someone).piss someone off annoy someone.piss on show complete contempt for.