Farm building not likely to topple (6)
I believe the answer is:
stable
'farm building' is the definition.
(I know that stable is a type of farm building)
'not likely to topple' is the wordplay.
I cannot really understand how this works, but
'likely to' could be 'able' (I've seen this in another clue) and 'able' is located in the answer.
The remaining letters 'st' is a valid word which might be clued in a way I don't understand.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for stable that I've seen before include "Sure!" , "Firmly-fixed; building" , "Fixed; stud building" , "Outhouse for horses" , "Home for horses" .)