What is the meaning of stinker?

noun

• A person who is deemed to be despicable or contemptible.
  • usage: "only a rotter would do that"; "kill the rat"; "throw the bum out"; "you cowardly little pukes"; "the British call a contemptible person a `git'"
  • synonyms: rotter, dirty dog, rat, skunk, stinkpot, bum, puke, crumb, lowlife, scum bag, so-and-so, git
• Anything that gives off an offensive odor (especially a cheap cigar. )
• An artifact (especially an automobile) that is defective or unsatisfactory.
  • synonyms: lemon