Bank of Scotland steadier once cocaine's banned (4)
I believe the answer is:
brae
'bank of scotland' is the definition.
(Scottish term for a bank or hillside)
I cannot understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for brae that I've seen before include "Sloping bank (Scottish)" , "Bear up on Scottish hillside" , "Bare on Scottish hillside" , "Scottish hill slope" , "Steep bank (Scots)" .)