verb-intransitive. To urinate.v. To urinate on or in.v. To discharge (blood, for example) in the urine.n. Urine.n. The act or an instance of urinating.phrasal-verb. piss off To make or become angry.phrasal-verb. piss off Used in the imperative as a signal of angry dismissal.idiom. take the piss out of Chiefly British To tease or mock (someone).