Money still to be paid on a watch (7)
I believe the answer is:
balance
'money' is the definition.
(thesaurus)
'still to be paid on a watch' is the wordplay.
I cannot really understand how this works, but
'a' could be 'an' and 'an' is located in the answer.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for balance that I've seen before include "Equilibrium or symmetry" , "Poise" , "Sign" , "Weighing device" , "emotional stability" .)