Has it a plucky player? (4)
I believe the answer is:
lute
'player?' is the definition.
Although both the answer and definition are singular nouns, I can't see how they can define each other.
I can't explain the rest of the clue.
Can you help me to learn more?
(Other definitions for lute that I've seen before include "Elizabethan stringed instrument" , "Ancient stringed instrument" , "Protective packing" , "Subject to drugs" , "Old musical instrument" .)