America for example put back one of the customs (5)
I believe the answer is:
usage
'one of the customs' is the definition.
Although both the answer and definition are singular nouns, I can't understand how they can define each other.
'america for example put back' is the wordplay.
'america' becomes 'usa' (synonyms).
'for example' becomes 'e.g.' (short for 'exempli gratia', 'for example' in Latin).
'put back' is a reversal indicator.
'eg' backwards is 'ge'.
'usa'+'ge'='USAGE'
Can you help me to learn more?
(Other definitions for usage that I've seen before include "Customary practice" , "Utilisation" , "Terminology - custom" , "linguistic custom?" , "management" .)