Support for a couple (5)
I believe the answer is:
brace
This clue is a double definition.
'support' is the first definition.
(I know that brace is a more specific form of the action support)
'for a couple' is the second definition.
(brace can mean a pair of something)
(Other definitions for brace that I've seen before include "double" , "Support - pair" , "Stanchion" , "Steady; pair" , "Strengthener; pair" .)