Webster's Revised Unabridged Dictionary · 1913

Takeoff

Takeoff , noun

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.
The take-off should be selected with great care, and a pit of large dimensions provided on the landing side. — Encyc. of Sport
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.

Also: Take-off