New male doctor comes in to treat mummy (6)
I believe the answer is:
embalm
'to treat mummy' is the definition.
I can't tell whether this definition defines the answer.
'new male doctor comes in' is the wordplay.
'new' indicates an anagram.
'doctor' becomes 'mb' (Bachelor of Medicine, Medicinae Baccalaureus).
'comes in' indicates putting letters inside.
'male' is an anagram of 'ealm'.
'ealm' enclosing 'mb' is 'EMBALM'.
Can you help me to learn more?
(Other definitions for embalm that I've seen before include "Use chemicals to preserve a dead body from decay" , "Treat corpse with preservatives" , "Prepare for burial" , "Treat corpse so as to retard decay" , "Prepare corpse for preservation (6)" .)