Crossword Genius

Ghosts’ morale (7)

Ross

I believe the answer is:

spirits

I'm a little stuck... Click here to teach me more about this clue!

'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" .)

I've seen this clue in The Independent.
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