Go off the ___ (lose control) (5)
I believe the answer is:
rails
(Other definitions for rails that I've seen before include "Train tracks" , "Makes a protest" , "secretive birds" , "For trains" , "Metal bars of a barrier" .)
I believe the answer is:
rails
(Other definitions for rails that I've seen before include "Train tracks" , "Makes a protest" , "secretive birds" , "For trains" , "Metal bars of a barrier" .)