A witticism from aunt? (5)
I believe the answer is:
sally
I believe this clue is a double definition.
'a witticism' is the first definition.
(thesaurus)
'aunt?' is the second definition.
'from' is the 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]" .)