To ski down a mountain or glacier that has been reached by helicopter rather than a normal ski lift.(verb)
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Use "heli-ski" in a sentence
"Jokull Bergmann, who is a world class mountain guide and the founder of what has turned out to be the most amazing heli-ski operation, asked if I would like to join some of the other guests and ski a few runs."
"The skiers and snowboarders who venture to the state in the winter tend to be of the adrenaline-rush set, coming to heli-ski in Valdez, a mountainous area also in south central Alaska, or to take on Alyeska's double black diamonds."
"Advanced riders can book private heli-ski trips, for helicopter drop-offs on the mountain's remote peaks."