A diver, especially someone who searches for things underwater.(noun)
Someone who urinates; a pisser.(noun)
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Use "urinator" in a sentence
"This Galapagos sub-species of the brown pelican bears, for some reason, the sub-specific name urinator."
"He should also have to demonstrate his "right stuff" by sampling the urinator-recylater water too & flavored with Tang for the prez (gosh, that's if they ever get that dern thing to work right - can't believe the cosmonauts would really want to "borrow" the US can, probably not the "reclaimed" water though)!"
"Besides, the only real urinator I see here is you, pissing yourself about McCarthy over and over again."