Fine point of Middle Germanic etymology (6)
I believe the answer is:
nicety
'fine point' is the definition.
(I've seen this in another clue)
'of middle germanic etymology' is the wordplay.
'of' says the answer is hidden in the clue.
'NICETY' is hidden in the letters of 'middle germanic etymology'.
(Other definitions for nicety that I've seen before include "A detail of etiquette" , "Delicacy" , "Subtle difference" , "Judged to a . . . . . . - with precision" , "Judge to a . . . . . . - with precision" .)