Crossword Genius

That thing's (3)

Ross

I believe the answer is:

its

(Other definitions for its that I've seen before include "Sit (anag.)" , "Belonging to something nonhuman" , "Neuter possessive pronoun" , "Another form of 'tis" , "Belonging to a particular thing" .)

I've seen this clue in the Penny Press, the Newsday, The Star Tribune and the Universal.
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