Proverbial saying (5)
I believe the answer is:
adage
'proverbial saying' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for adage that I've seen before include "Well-remembered proverb or saying" , "Proverb, maxim" , "True proverb or saying" , "Old saw" , "Dictum" .)