climbout

/K L IH1 M B AW1 T/
noun
  1. 1

    The period after takeoff and before cruising, during which the aircraft climbs to a predetermined altitude.

    syn:climb
  2. 2

    A ladder or other construction on a slope that allows wildlife to exit safely from a freeway, highway, etc.

Synonyms

Source: https://en.wiktionary.org/wiki/climbout