Money on account last from mummy (6)
I believe the answer is:
legacy
'money' is the definition.
The answer and definition can be both related to property as well as being singular nouns.
Maybe there's an association between them I don't understand?
'on account last from mummy' is the wordplay.
'on' becomes 'leg' (cricket term, fielding positions).
'account' becomes 'ac' (abbreviation for account).
'last from' says to take the final letters.
The last letter of 'mummy' is 'y'.
'leg'+'ac'+'y'='LEGACY'
Can you help me to learn more?
(Other definitions for legacy that I've seen before include "Bombay since 1995" , "Birthright" , "Like old software" , "Gift of property by will" , "Hand-me-down" .)