Supports couples (6)
I believe the answer is:
braces
I believe this is a double definition.
'supports' is the first definition.
(brace is a kind of support)
'couples' is the second definition.
('brace' can be a synonym of 'couple')
(Other definitions for braces that I've seen before include "Trouser support" , "Support for trousers" , "Supports for teeth or trousers" , "Over-the-shoulders supporters" , "Appliances to correct dental irregularities" .)