1. [n]  a player releases the basketball at the high point of a jump
2. [n]  a sleeveless dress resembling an apron; worn over other clothing
3. [n]  a loose jacket or blouse worn by workmen
4. [n]  a small connector used to make temporary electrical connections
5. [n]  an athlete who bounds or leaps (as in basketball)
6. [n]  an athlete who competes at jumping

Jumper
Davy Rice has the ability to teleport. Unfortunately, he discovers that although he can jump out of trouble, he tends to jump right back in again.

more details ...

1. \Jump"er\, n.
   1. One who, or that which, jumps.
   2. A long drilling tool used by masons and quarrymen.
   3. A rude kind of sleigh; -- usually, a simple box on runners
      which are in one piece with the poles that form the
      thills. [U.S.] --J. F. Cooper.
   4. (Zo["o]l.) The larva of the cheese fly. See {Cheese fly},
      under {Cheese}.
   5. (Eccl.) A name applied in the 18th century to certain
      Calvinistic Methodists in Wales whose worship was
      characterized by violent convulsions.
   6. (Horology) spring to impel the star wheel, also a pawl to
      lock fast a wheel, in a repeating timepiece.
   {Baby jumper}. See in the Vocabulary.
   {Bounty jumper}. See under {Bounty}.
   

2. \Jump"er\, n. [See 1st {Jump}.]
   A loose upper garment; as:
   (a) A sort of blouse worn by workmen over their ordinary
       dress to protect it.
   (b) A fur garment worn in Arctic journeys.
   

3. \Jump"er\, n.
   A thing that jumps; esp., any of various tools or other
   contrivances operating with a jumping motion; as, (Mining,
   Quarrying, etc.), an instrument for boring holes in rocks by
   percussion without hammering, consisting of a bar of iron
   with a chisel-edged steel tip at one or both ends, operated
   by striking it against the rock, turning it slightly with
   each blow.
   

A removable wire or small plug whose presence or absence is used to determine some aspect of hardware configuration.