Goofs in proofs (6)
I believe the answer is:
errata
'goofs in proofs' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for errata that I've seen before include "Noted mistakes" , "Boobs in a book" , "Mistakes in printed matter" , "Slips" , "List of text corrections to be made in a publication" .)