Father with speed identifying Father's position (6)
I believe the answer is:
papacy
'father's position' is the definition.
Although both the answer and definition are singular nouns, I can't understand how they can define each other.
'father with speed' is the wordplay.
'father' becomes 'papa' (papa is a kind of father).
'with speed' becomes 'cy' (I am not sure about this - if you are sure you should believe this answer much more).
'papa'+'cy'='PAPACY'
'identifying' is the link.
Can you help me to learn more?
(Other definitions for papacy that I've seen before include "Pontificate" , "Office of the pontiff" , "Job in Rome" , "religious role" , "ecclesiastical office" .)