Engine cover
'engine cover' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for hood that I've seen before include "See 5" , "Outlaw and gangster" , "Thomas -, Eng. poet" , "See 8" , "this could provide cover" .)
(Other definitions for cowling that I've seen before include "Removable engine cover" , "aeroplane's engine casing" .)