Spirit in goblet raised by king (4)
I believe the answer is:
puck
'spirit' is the definition.
(I have seen 'Mischievous spirit ' mean 'puck' so perhaps 'spirit' could also mean 'puck')
'goblet raised by king' is the wordplay.
'goblet' becomes 'cup' (I can't explain this - if you can you should believe this answer much more).
'raised by' says the letters should be written in reverse.
'king' becomes 'K' (abbreviation for king in chess).
'cup' back-to-front is 'puc'.
'puc'+'k'='PUCK'
'in' acts as a link.
Can you help me to learn more?
(Other definitions for puck that I've seen before include "One of 5 [FAIRIES]" , "One icily struck by player" , "gets knocked about with sticks" , "Ice hockey missile" , "Oberon's sprite (AMND)" .)