Noun
inrun (plural inruns)
(skiing) In ski jumping, a steep portion of the ramp, where skiers gain speed before taking off.
Because they are lighter than men, female ski jumpers need a longer inrun and reach a higher landing speed. Source: Internet
Summer ski jumping Ski jumping can also be performed in the summer on an inrun where the tracks are made from porcelain and the grass on the slope is coated with plastic, combined with water. Source: Internet
The jumper will now receive or lose points if the inrun (or start gate) length is adjusted to provide optimal takeoff speed. Source: Internet