noun

• (history) A criminal who is excluded from normal legal rights; one who can be killed at will without legal penalty.
• (humorous) An in-law: a relative by marriage.
• (humorous) One who would be an in-law except that the marriage-like relationship is unofficial.
• (slang) A prostitute who works alone, without a pimp.
  "Without a pimp, she was an "outlaw," likely to be harassed, or threatened with assault or robbery on the street."

verb

• (transitive) To declare illegal.
• (transitive) To place a ban upon.
  "The legal change in England and Wales will outlaw selling, manufacturing, renting or importing zombie knives."
• (transitive) To make or declare (a person) an outlaw.
  "Eirik and his people were outlawed at Thorsnes Thing."
• (transitive) To remove from legal jurisdiction or enforcement.
  "to outlaw a debt or claim"