Keeps in corsets (5)
I believe the answer is:
stays
This clue might be a double definition.
'keeps' is the first definition.
The definition and answer can be both man-made objects as well as being plural nouns.
Maybe you can see an association between them that I can't see?
'corsets' is the second definition.
(I've seen this before)
'in' acts as a link.
Can you help me to learn more?
(Other definitions for stays that I've seen before include "Remains (in place)" , "Remains; supporting wires" , "Stanchions" , "for a slimmer figure" , "Supports" .)