Take-off

n.
  1. An imitation, especially in the way of caricature; -- used with of or on; as, the comedian did a hilarious takeoff on the president.
  2. The spot at which one takes off; specif., the place from which a jumper rises in leaping.
  3. The beginning of a leap from a surface or a flight into the air, especially the process or event of an airplane leaving the ground and beginning its flight; as, the takeoff of flight CA123 was scheduled for 3:00 PM.