one who dives under water in search of something, as for pearls; a diver (from L. urinare < urinor, to plunge under water, dive)
In Latin there is a curious twist in that whereas urina means “urine,” the verb urinare means “to dive,” and to the Romans a urinator was a diver - an example of a deceptive cognate.
Two species of this bird (the loon), Urinator imber and the red-throated diver, Urinator lumme, frequent our northern waters.
What you might call the male penis because most of the time it's used, you expel micturition (piss, pee, poddy, etc.) out of it and into a urinal, toilet, bottle, cup, and so on where it can (hopefully) be disposed of.
Someone who constantly has to urinate and speaks in a german-like tone of voice similar to Arnold.
Due to the frequency of the urinationations the person is often suspected of being a cyborg.