Bank of Scotland being courageous, but not very? (4)
I believe the answer is:
brae
'bank of scotland' is the definition.
(Scottish term for a bank or hillside)
'courageous but not very?' is the wordplay.
'courageous' becomes 'brave' (synonyms).
'but not' indicates named letters should be taken away.
'very?' becomes 'v' (abbreviation).
'brave' with 'v' taken out is 'BRAE'.
'being' acts as a link.
(Other definitions for brae that I've seen before include "Bare on Scottish hillside" , "bank on Clydeside" , "Bank of Scotland" , "Scottish hill slope" , "Upland area in Scotland" .)