To be contingent or conditioned; to have something as a necessary condition; to hinge on.
To hang down; to be sustained by being fastened or attached to something above.
To trust; to have confidence; to rely.
To cause to be contingent or dependent on; to set as a necessity.
To take a customary action to ward off some misfortune that is believed to be attracted by a presumptuous statement.
Hopefully; a self-directive to undertake the customary action to ward off bad luck.