What is the meaning of jumper?

noun

• A person who jumps.
  • usage: "as the jumper neared the ground he lost control"; "the jumper's parachute opened"
• An athlete who competes at jumping.
  • usage: "he is one hell of a jumper"
• A crocheted or knitted garment covering the upper part of the body.
  • synonyms: sweater
• A coverall worn by children.
• A small connector used to make temporary electrical connections.
• A loose jacket or blouse worn by workmen.
• A sleeveless dress resembling an apron; worn over other clothing.
  • synonyms: pinafore, pinny
• Basketball) a player releases the basketball at the high point of a jump. (.
  • synonyms: jump shot