A witticism from aunt? (5)
I believe the answer is:
sally
I believe this is a double definition.
'a witticism' is the first definition.
(thesaurus)
'aunt?' is the second definition.
'from' acts as a link.
(Other definitions for sally that I've seen before include "A sortie or witty remark" , "Go out" , "Rush out suddenly" , "Sarah might make a witty remark about the willow" , "one in 3 the 12 30 [DROP the DEAD DONKEY]" .)