Missile leaves (6)
I believe the answer is:
rocket
I believe this clue is a double definition.
'missile' is the first definition.
(I've seen this in another clue)
'leaves' is the second definition.
(I know that Rocket is a type of leaf vegetable)
(Other definitions for rocket that I've seen before include "Roasting" , "Projectile, missile" , "Projectile firework" , "Severe criticism" , "Self-propelled firework or missile" .)