Hall's partner in pop (5)
I believe the answer is:
oates
'hall's partner in pop' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for oates that I've seen before include "Captain on Scott expedition who died in blizzard" , "Titus --, English conspirator" , "Antarctic explorer" , "Captain -, polar explorer with Scott" , "His last words were I'm just going outside, and may be some time" .)