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.
or גְּבֻל; (shortened) from גָּבַל; properly, a cord (as twisted), i.e. (by implication) a boundary; by extension the territory inclosed; border, bound, coast, [idiom] great, landmark, limit, quarter, space.