Sensible man rushes back to conceal something that could identify family (7)
I believe the answer is:
surname
'something that could identify family' is the definition.
I can't judge whether this defines the answer.
'sensible man rushes back to conceal' is the wordplay.
'to conceal' indicates a hidden word.
'back' shows that the letters should be reversed in order.
'emanrus' is hidden within 'sensible man rushes'.
'emanrus' backwards is 'SURNAME'.
Can you help me to learn more?
(Other definitions for surname that I've seen before include "Something one gets from father" , "Word by which a family is known" , "Family appellation" , "Family name" , "title inherited from parent" .)