Possible little drop of spirits for Spooner to get drunk (7)
I believe the answer is:
tosspot
'drunk' is the definition.
(thesaurus)
'possible little drop of spirits for spooner' is the wordplay.
I cannot really understand how this works, but
'drop' could be 'spot' (I have seen 'Drop of rain ' mean 'spot' so perhaps 'drop' could also mean 'spot') and 'spot' is present in the answer.
'of' could be 'o' and 'o' is found in the answer.
This may be the basis of clue (or it may be nonsense).
'to get' acts as a link.
(Other definitions for tosspot that I've seen before include "One drinker" , "One drunkard" , "Drunk (informal)" , "supper, habitually" , "Fool" .)