Hole in the understanding
In a question: Lack of knowledge of a certain detail that is known to many. The extent of knowledge that is not known to a person, contrary to what is expected of him.
(Modern Hebrew)
Translation
Expression (Hebrew)
חֹור בַּהַשְׂכָּלָה
Definition (Hebrew)
בְּהַשְׁאָלָה: חֹוסֶר יְדִיעַת פְּרָט מְסֻיָּם הַיָּדוּעַ בָּרַבִּים. תְּחוּם יֶדַע שֶׁאֵינוֹ יָדוּעַ לָאָדָם בְּנִגּוּד לַמְּצֻפֶּה מִמֶּנּוּ.
(הָעִבְרִית הַחֲדָשָׁה)