GNU Collaborative International Dictionary of English

Found 2 definitions 

  1.       

    jumpstart, Jump-start , v. t.
    1. To start (the engine of a motor vehicle) using a temporary connection to supply electrical power from another vehicle or another source of current; -- an emergency procedure used when a vehicle's own battery has insufficient power to start the vehicle normally. Cables used to transmit electrical current from one vehicle to another for the purpose of jump-starting are called jumper cables.
      PJC
    2. To provide a speedy start to (an activity) using the assistance of some external impetus; to re-energize (an activity proceeding sluggishly); -- accomplished by application of a stimulus not normally used in the activity. [Figurative]
      PJC
    
      
    
  2.       

    Jump-start , n. The action or event of jump-starting. For motor vehicles, the jump-starting of an engine is also called a jump.
    PJC