Stableman (6)
'stableman' is the definition.
(synonyms)
This is all the clue.
(Other definitions for ostler that I've seen before include "Inn's stableman, of old" , "Inn servant" , "Horseman at the inn of old" , "Inn stableman (hist.)" , "Attendant for horses in olden times" .)
'stableman' is the definition.
(synonyms)
This is all the clue.
(Other definitions for groom that I've seen before include "New husband" , "dress?" , "Tender of horses" , "One caring for horses" , "Bride's choice" .)