From cabak, a copse -- thick(-et).
see HEBREW cabak
H5442. sebak
סְבַךְ noun [masculine] thicket; — absolute בַּסְּבַךְ (נֶאֱחַז) Genesis 22:13 (so Ginsb; Baer בַּסֲבַךְ, van d. H. כַּסְּבָךְ) a ram caught in the thicket by its horns; plural construct הַיַּעַר ִסבְכֵי Isaiah 9:17 thickets of the forest, 10:34.