Ghostly pluck? (6)
I believe the answer is:
spirit
'pluck?' is the definition.
(pluck is a kind of spirit)
I don't understand the rest of the clue.
Can you help me to learn more?
(Other definitions for spirit that I've seen before include "Ghost or animation" , "Life-force" , "Ghost or vigor" , "Liquor or spectre" , "Mood - ghost - alcohol" .)