Old boy back to fill face with duck and game (7)
I believe the answer is:
diabolo
'game' is the definition.
(I've seen this before)
'old boy back to fill face with duck' is the wordplay.
I cannot quite see how this works, but
'old' could be 'o' (abbreviation as in OT - Old Testament) and 'o' is found within the answer.
'boy' could be 'ab' and 'ab' is located in the answer.
'duck' could be 'o' (resembles zero - 'duck' in cricket) and 'o' is found within the answer.
The remaining letters 'dil' is a valid word which might be clued in a way I don't understand.
This explanation may well be incorrect...
'and' acts as a link.
Can you help me to learn more?
(Other definitions for diabolo that I've seen before include "juggling performance?" , "O, bad oil is used in this game with top and sticks" , "Game involving sticks and spinning top" , "Top-on-a-string game" , "Devilish" .)