Utilise an adventure (7)
I believe the answer is:
exploit
This clue is a double definition.
'utilise' is the first definition.
(exploiting is a kind of utilizing)
'an adventure' is the second definition.
(I've seen this in another clue)
(Other definitions for exploit that I've seen before include "The deed to make gain from" , "Milk" , "Feat, accomplishment" , "Heroic achievement" , "Make full use of" .)