Chances of mapmaker concealing direct debit (4)
I believe the answer is:
odds
'chances' is the definition.
(the odds of something happening)
'of mapmaker concealing direct debit' is the wordplay.
'of' becomes 'o''.
'mapmaker' becomes 's' (I am not sure about this - if you are sure you should believe this answer much more).
'concealing' indicates putting letters inside.
'direct debit' becomes 'DD' (abbreviation).
'o'+'s'='os'
'os' placed around 'dd' is 'ODDS'.
Can you help me to learn more?
(Other definitions for odds that I've seen before include "They could be evens" , "Betting price" , "Variance" , "Bookies give them" , "Chance" .)