Stable workers (6)
I believe the answer is:
grooms
'stable workers' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for grooms that I've seen before include "Stable-hands" , "chaps getting a ring" , "Horse-tenders" , "Neatens; husbands to be" , "Potential husbands" .)