Reliable place for horses (6)
I believe the answer is:
stable
This clue is a double definition.
'reliable' is the first definition.
(thesaurus)
'place for horses' is the second definition.
(I've seen this before)
(Other definitions for stable that I've seen before include "Steady in the outhouse" , "Horse's house" , "Durable; horse shed" , "Steadfast, resolute" , "Lasting" .)