Jail’s image promotion has feasibility (6)
I believe the answer is:
prison
'jail's' is the definition.
(I've seen this in another clue)
'image promotion has feasibility' is the wordplay.
I cannot really see how this works, but
'promotion' could be 'pr' (I've seen this in other clues) and 'pr' is present in the answer.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for prison that I've seen before include "Correctional institution" , "Cooler" , "Place of confinement" , "No rips (anag)" , "Wormwood Scrubs, for example" .)