From cagar; something enclosing, i.e. A margin (of a region, of a panel); concretely, a stronghold -- border, close place, hole.
see HEBREW cagar
H4526. misgereth
מִסְגֶּ֫רֶת noun feminine 1. border, rim.
2 fastness; — absolute ׳מ Exodus 25:27; 37:14; construct ׳מ 25:25; 37:12; suffix מִסְגַּרְתּוֺ 25:25; 37:12; plural absolute מִסְגְּרוֺת 1 Kings 7:28 +; suffix מִסְגְּרֹתֶיהָ 7:35; 7:36, etc.; —
1 border, rim (enclosure), of sacred table in tabernacle Exodus 25:25 (twice in verse); 25:27 = 37:12 (twice in verse); 37:14; of bases of the sea, in temple 1 Kings 7:28 (twice in verse); 7:29, 31, 32, 35, 36 (compare Benz), also 2 Kings 16:17.
2 fastness, מִמּ ׳וְיַחְרְגוּ Psalm 18:46 = 2 Samuel 22:46 (see חרג) and they shall come quaking out of their fastnesses, so Micah 7:17 (יִרְגְּזוּ, like reptiles), all of nations, in awe of ׳י.
II. סגר (√ of following; compare apparently Arabic fill with water Lane1308, torrent that fills everything Idib.; Syriac imber vehemens, and Samaritan אַסְגָּר, compare GeiNachgel. Schr. iv. 186).