וְלַכָּתֵף֙ הַשֵּׁנִ֔ית חְמֵ֥שׁ עֶשְׂרֵ֖ה קְלָעִ֑ים עַמֻּדֵיהֶ֣ם שְׁלֹשָׁ֔ה וְאַדְנֵיהֶ֖ם שְׁלֹשָֽׁה׃
И для другой стороны будут завесы в пятнадцать локтей; столбов для них три, и подножий для них три.
Rashi
behold I will expose the fortresses of the land of Moab that are on the border at the end of their boundary; that is the flank, the end of the boundary of their land, like (Exod. 27:15): “And on the other side,” to the flank, which Targum [Jonathan] translates לְעִיבְרָא, to the side.