Top Definition
A compound word between cactus and a cat meaning a prickly/fierce cat.
You: My cat is really prickly.

Someone: Dude I think you mean your cat is a catus
by Insert Original Name Here January 13, 2014
Slang for vagina (from pussy), sometimes extended to catosaurus
Where is thy catus?
by Cantanope May 20, 2015
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