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.
To introduce errors or inaccuracies; to skew.
To expel, reject, or renounce.
To give forth in an unpremeditated manner.
Of a horse, to eject its rider.
To confuse; especially, to lose a pursuer.