Ship likely to break down? (9)
I believe the answer is:
destroyer
This clue is a double definition.
'ship' is the first definition.
(I know that destroyer is a type of warship)
'likely to break down?' is the second definition.
(I've seen this before)
(Other definitions for destroyer that I've seen before include "killer" , "Wrecker" , "heavily armed warship" , "One who wrecks" , "Ravager" .)