From an unused root meaning to be arched or contracted; hunch-backed -- crookbackt.
H1384. gibben
גִּבֵּן adjective crook-backed, hump-backed (compare Aramaic גְּבִין id., Late Hebrew גַּבָּן highlander; also Late Hebrew גבין, Aramaic גבינא, , all = brow (eye-brow, etc.); compare Arabic side of forehead), Leviticus 21:20.