Parachutist (8)
I believe the answer is:
skydiver
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">parachutist</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for skydiver that I've seen before include "I jump out of planes" , "Sporting parachutist" , "one's taken off to get in position" , "Aerial jumper" , "Person who performs acrobatics in upper air before opening parachute" .)