What is the meaning of scrag?

noun

• A person who is unusually thin and scrawny.
  • synonyms: thin person, skin and bones
• Lean end of the neck.
• The lean end of a neck of veal.
  • synonyms: scrag end

verb

• Strangle with an iron collar.
  • usage: "people were garrotted during the Inquisition in Spain"
  • synonyms: garrote, garrotte, garotte
• Wring the neck of.
  • usage: "The man choked his opponent"
  • synonyms: choke