ציטירנדיקער פּירוש אויף נחמיה 13:5

the fortress [Heb. הַגִּזְרָה.] Jonathan renders: the fortress. And I say that the tall House was called [the fortress] and that the low cells that were around it were called “the structure.” Menahem, however, (page. 54) interpreted גִּזְרָה as a chamber.

waves of dew Heb. אגלי, waves of גלי, dew, and the “aleph” is superfluous, as in (above 13: 17), “and to my speech (ואחותי) in your ears.” The “aleph” is superfluous at the beginning of the word because it is a noun, and similarly (Ezek. 21:20), “the scream of (אבחת) the sword,” like נבוח, barking, the scream of the sword. Another explanation: is like אַגְנֵי, basins of dew. A type of basins, divisions in which the dew is deposited. The “lammed” is interchangeable with a “nun,” and so in the Book of Ezra (Neh. 13:7), chamber (נִשְׁכָּה) like לִשְׁכָּה.