Or cowllah {so-lel-aw'}; active participle feminine of calal, but used passively; a military mound, i.e. Rampart of besiegers -- bank, mount.
see HEBREW calal
H5550. solelah
סֹלְלָה noun feminine mound; — ׳ס 2 Samuel 20:15 7t.; סוֺלְלָה Daniel 11:15; plural סֹלְלוֺת Jeremiah 32:24; 33:4. — עַלהָֿעִיר ס ׳שָׁפַךְ cast up mound against the city , besieging it, 2 Kings 19:32 = Isaiah 37:33; Jeremiah 6:6; Ezekiel 4:2; 26:8; with אֶל 2 Samuel 20:15 (error for על); without העיר על Ezekiel 17:17; 21:17; Daniel 11:15 without verb Jeremiah 32:24; 33:4.