What is the meaning of crook?

noun

• Someone who has committed a crime or has been legally convicted of a crime.
  • synonyms: criminal, felon, outlaw, malefactor
• A circular segment of a curve.
  • usage: "a bend in the road"; "a crook in the path"
  • synonyms: bend, twist, turn
• A long staff with one end being hook shaped.
  • synonyms: shepherd's crook

verb

• Bend or cause to bend.
  • usage: "He crooked his index finger"; "the road curved sharply"
  • synonyms: curve