(vulgar, slang) The feces from a cat (feline feces).
1978, "Eating Your Way To Heaven", ''Tilt: An Anthology of New England Women's Writing and Art'', New Victoria Publishers (1978), [http://books.google.com/books?id=n98YAAAAYAAJ&q=%22a+catshit%22&dq=%22a+catshit%22 page 58]:
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Regional slang from around the English-speaking world — British, Australian, Irish, Caribbean, Nigerian, Filipino, AAVE, and the hyphenated-English dialects that make the internet sound local.
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