Proverb, saying (5)
I believe the answer is:
adage
I believe this is a double definition.
'proverb' is the first definition.
(synonyms)
'saying' is the second definition.
(adage is a kind of saying)
(Other definitions for adage that I've seen before include "Old saw" , "Proverb expressing a general truth" , "Maxim, aphorism" , "say it again and again!" , "Axiom" .)