Entry 2 senses · 2 variants Webster, 1913 Piss /(pĭs)/ · IPA /pɪs/ v. t. & i. n. 01 v. t. & i. To discharge urine, to urinate; -- usually considered vulgar. 1. To discharge urine, to urinate; -- usually considered vulgar. 02 n. Urine. 1. Urine.[vulgar] Phrases & compounds take a piss — urinate.