Found it! Rashi Taanis 4a
????? ?????: ???? ???? ??? ???? ?????? ????? ???? (?? ?.) ????? ??? ??? ?? ??? ????? ??? ???? ????? ??? ???
It is a rabbinic scholar who is sharp and young. Like a well developed egg which has the same shoresh. This is different than a Torah Scholar who is not per-say on his way to get real smicha. So today I would say perhaps kemat NO ONE can be considered to be
“????? ??????”. Though sometimes it is probably meant not literally.