takeoff
A launch or ascent into the air or into flight, such as of an aircraft, rocket, bird, high-jumper etc.
Example
“That high-jumper's takeoff needs some work.”
Other meanings
A parody or lampoon of someone or something.
A quantification, especially of building materials.
Where this comes from
This definition is adapted from “takeoff” on Wiktionary, by its contributors, published under CC BY-SA 4.0. This page is published under the same licence.