Roof supporter (6)
I believe the answer is:
rafter
'roof supporter' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for rafter that I've seen before include "traveller on log platform" , "Sloping beam supporting a roof" , "One who tries to hear something" , "piece of timber" , "See retired Aussie tennis player" .)