Duck à l'orange? (8)
I believe the answer is:
mandarin
'duck' is the definition.
(mandarin duck is a kind of duck)
'a l'orange?' is the wordplay.
I cannot really see how this works, but
'a' could be 'an' and 'an' is found in the answer.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for mandarin that I've seen before include "High official in imperial China and a fruit" , "Important government official" , "Fruity" , "World's most spoken language" , "Tongue" .)