samkvæmt kapala: The Mystery of Zayin
Zayin is considered a "crowned" Vav. Just as Vav represents "yashar," straight light from God to man, so Zayin represents (or chozer), or returning light. The Besht (Baal Shem Tov) said that just as a woman of valor is the crown of her husband, so Zayin, the 7th letter, is the crown of Vav.