N. 1) Anything unpleasant that you may step in or get splattered on you. 2) Solid waste expelled from your bum. 3) A "cover all" word used as a filler instead of giving an actual description of something.
V. 1) The act of expelling solid waste from your bum.
N. Ah man! I got poop on me.
N. Get all your poop off my desk!
V. Be right back, I gotta go poop.