Green’s Dictionary of Slang

1. a fart.

1968		Frank Zappa ‘Let’s Make The Water Turn Black’ 🎵 Ronnie helping Kenny helping burn his poots away.
1983		Maledicta VII 150: What did you call ‘them’ at your house? Barks? Poots? Smells? Snappers? Smiffles? Stinkies? Toots? Whiffles?

2. (US) an unpleasant person; sometimes used affectionately.

1976

P. Conroy Great Santini (1977) 416: ‘You all right, poot?’ Coach Spinks said.