"Specifically . . ." (2,3)
I believe the answer is:
to wit
'specifically' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for to wit that I've seen before include "That is to say" , "Namely" , "i.e." , "In other words" , "what to do with a broken-down car!" .)