He Discovered America
By analogy: Discovered something that was already known to everyone before.
(Modern Hebrew)
Translation
Expression (Hebrew)
גִּלָּה אֶת אָמֵרִיקָה
Definition (Hebrew)
בְּהַשְׁאָלָה: גִּלָּה דָּבָר שֶׁכְּבָר הָיָה יָדוּעַ לְכֻלָּם זֶה מִכְּבָר.
(הָעִבְרִית הַחֲדָשָׁה)