A novelist drinks outside in the morning (6,4)
I believe the answer is:
'a novelist' is the definition.
I know nothing about this answer so I can't judge whether this works.
'drinks outside in the morning' is the wordplay.
'drinks' becomes 'martinis' (martini is a kind of drink).
'outside' means one lot of letters goes inside another.
'in the morning' becomes 'am' (AM on a clock).
'martinis' placed around 'am' is 'MARTIN AMIS'.
Can you help me to learn more?
(Other definitions for martin amis that I've seen before include "Writer" , "The Rachel Papers was his first novel in 1973" .)