Ghosts’ morale (7)
I believe the answer is:
spirits
'morale' is the definition.
(I've seen this before)
I don't understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for spirits that I've seen before include "eg Gin, whisky" , "whiskeys?" , "Shades" , "Ghosts" , "shorts" .)