Novelist and explorer (5)
I believe the answer is:
scott
I believe this clue is a double definition.
'novelist' is the first definition.
(I have seen 'old novelist' mean 'scott' so perhaps 'novelist' could also mean 'scott')
'explorer' is the second definition.
(I have seen 'Antarctic explorer ' mean 'scott' so perhaps 'explorer' could also mean 'scott')
'and' acts as a link.
(Other definitions for scott that I've seen before include "Sir Walter --, writer" , "one wanting to explore?" , "Ivanhoe's creator" , "He died leading Antarctic expedition" , "old novelist" .)