'Urinator' definitions:

Definition of 'urinator'

From: WordNet
noun
A person who urinates [syn: pisser, urinator]

Definition of 'Urinator'

From: GCIDE
  • Urinator \U"ri*na`tor\, n. [L., from urinari to plunge under water, to dive.] One who dives under water in search of something, as for pearls; a diver. [R.] --Ray. [1913 Webster]