Adorn part of ship (4)
I believe the answer is:
deck
I believe this clue is a double definition.
'adorn' is the first definition.
(I know that adorn can be written as deck)
'part of ship' is the second definition.
('deck' is part of 'ship')
(Other definitions for deck that I've seen before include "Dress; floor; cards" , "Adorn; level on ship" , "Pack - part of record player" , "Ship's platform" , "Set of cards" .)