What does FOUL mean?

adjective

1. highly offensive; arousing aversion or disgust“a disgusting smell”
2. offensively malodorous“a foul odor”
3. violating accepted standards or rules“a dirty fighter”
4. (of a baseball) not hit between the foul lines
5. (of a manuscript) defaced with changes“foul (or dirty) copy”
6. characterized by obscenity“had a filthy mouth”
7. disgustingly dirty; filled or smeared with offensive matter“as filthy as a pigsty”
8. especially of a ship's lines etc“with its sails afoul”