Wall support (4)
![Ross](/clue/static/ross-mug.min.png)
I believe the answer is:
stud
'wall support' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for stud that I've seen before include "Sex god" , "Stallion for breeding - fastener" , "Stallion kept for breeding" , "Sexual athlete" , "Farm for breeding horses" .)