Oriental bird on stormy sea (7)
I believe the answer is:
eastern
'oriental' is the definition.
(similar in meaning)
'bird on stormy sea' is the wordplay.
'bird' becomes 'tern' (tern is a kind of bird).
'on' means one lot of letters go next to another.
'stormy' indicates anagramming the letters (stormy suggests disruption).
'sea' with letters rearranged gives 'eas'.
'tern' put after 'eas' is 'EASTERN'.
(Other definitions for eastern that I've seen before include "Coming from the Orient" , "Of the direction of the rising sun" , "from afar" , "Chinese', for example" , "Facing away from the west" .)