[syn: make, urinate, piddle, puddle, micturate, piss, pee, pee-pee, make water, relieve oneself, take a leak, spend a penny, wee, wee-wee, pass water]
The Collaborative International Dictionary of English v.0.48:
Piss \Piss\ (p[i^]s), v. t. & i. [OE. pissen, F. pisser; akin to
   It. pisciare, D. & G. pissen, Dan. pisse, Icel. pissa.]
   To discharge urine, to urinate; -- usually considered vulgar.
   --Shak.
   [1913 Webster]
The Collaborative International Dictionary of English v.0.48:
Piss \Piss\, n.
   Urine. [vulgar]
   [1913 Webster]
   take a piss urinate. [vulgar]
      [PJC]
WordNet (r) 3.0 (2006):
piss
    n 1: liquid excretory product; "there was blood in his urine";
         "the child had to make water" [syn: urine, piss, pee,
         piddle, weewee, water]
    2: informal terms for urination; "he took a pee" [syn: peeing,
       pee, pissing, piss]
    v 1: eliminate urine; "Again, the cat had made on the expensive
         rug" [syn: make, urinate, piddle, puddle,
         micturate, piss, pee, pee-pee, make water,
         relieve oneself, take a leak, spend a penny, wee,
         wee-wee, pass water]