BDB49
[אָבַךְ] verb turn (?) (compare Assyrian Abâku Dlw = הָפַךְ; Thes MV and others compare בוך)
Hithpa`el
וַיִּתְאַבְכוּ
Isa 9:17
roll, roll up, as volume of smoke (of Israel under figure of thickets of forest) see De & compare הִתִהַפֵּךְ
Judg 7:3.