Beaten Arabs lost an impressive winger (9)
I believe the answer is:
albatross
'an impressive winger' is the definition.
'albatross' can be an answer for 'winger' (albatross is a kind of bird). I'm not certain of the 'an impressive' bit.
'beaten arabs lost' is the wordplay.
'beaten' is an anagram indicator.
'arabs'+'lost'='arabslost'
'arabslost' is an anagram of 'ALBATROSS'.
Can you help me to learn more?
(Other definitions for albatross that I've seen before include "Mallemuck" , "As Borstal is adapted for a big bird" , "Large seabird or constant burden" , "Sea bird" , "a mariner had a shot at?" .)