Definitions
1.VerbTo make foul; to soil; to contaminate, pollute.
2.Verb(specifically) To defecate on, to soil with excrement.
3.VerbTo stain or mar (e.g., with infamy or disgrace).
4.VerbTo stain or mar (e.g., with infamy or disgrace).
5.Verb(The addition of quotations indicative of this usage is being sought:) To entangle or run against so as to impede motion.