Kind of missile (6)
I believe the answer is:
exocet
'kind of missile' is the definition.
(I know that Exocet is a type of missile)
This is the entire clue.
(Other definitions for exocet that I've seen before include "Short range guided missile" , "which may be guided to hit ship" , "Subsonic, low-altitude missile" , "One was guided" , "Weapon" .)