A debt rescheduled to cover curious tattoo (8)
I believe the answer is:
drumbeat
'tattoo' is the definition.
(thesaurus)
'a debt rescheduled to cover curious' is the wordplay.
'rescheduled' indicates anagramming the letters (I've seen 'rescheduling' mean this (I've seen this in other clues)).
'to cover' is an insertion indicator.
'curious' becomes 'rum' (synonyms).
'a'+'debt'='adebt'
'adebt' is an anagram of 'dbeat'.
'dbeat' placed around 'rum' is 'DRUMBEAT'.
(Other definitions for drumbeat that I've seen before include "Sound of common percussion instrument" , "Rataplan" , "Thumping" , "Percussive noise" , "tattoo!" .)