spend a penny
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|Verb||1.||spend a penny - eliminate urine; "Again, the cat had made on the expensive rug"|
make water, micturate, pass water, pee, pee-pee, piss, relieve oneself, take a leak, wee, wee-wee, urinate, piddle, puddle, make
urinate - pass after the manner of urine; "The sick men urinated blood"
wet - make one's bed or clothes wet by urinating; "This eight year old boy still wets his bed"
stale - urinate, of cattle and horses