a primitive root; properly, to be burly, i.e. (figuratively) powerful (passively, impregnable); by implication, to ravage; dead, destroy(-er), oppress, robber, spoil(-er), [idiom] utterly, (lay) waste.
or (rarely in the abs.) הֲבֵל; from הָבַל; emptiness or vanity; figuratively, something transitory and unsatisfactory; often used as an adverb; [idiom] altogether, vain, vanity.