Grain that has undergone the leavening process. With regard to the Festival of Passover, it is prohibited to eat, benefit from, or possess leaven throughout the Passover Festival. Eating leaven during Passover is punishable by karet.
« Back to Glossary IndexThis glossary entry is adapted from references and indicies in Rabbi Steinsaltz's published works. Order your copy of the Steinsaltz Talmud and the Steinsaltz Reference Guide to the Talmud, today.