Scottish castle helps in tribal morale (8)
I believe the answer is:
balmoral
'scottish castle' is the definition.
(I've seen this before)
'helps in tribal morale' is the wordplay.
'helps' indicates the answer is hidden within the clue (I've seen 'helping of' mean this (I've seen this in other clues)).
'BALMORAL' is hidden within 'in tribal morale'.
(Other definitions for balmoral that I've seen before include "Holiday residence in Scotland of British royal family" , "Queen's castle" , "Laced boot" , "Royal place" , "Royal retreat in Scotland" .)