The term "daf" refers to a traditional Jewish text that is part of the Talmud, specifically the Gemara. It consists of a double-sided page of the Talmud, which includes both the Mishnah and the commentary on it. Studying a daf is a common practice in Jewish learning, often done in pairs or groups. In the context of Jewish education, "daf" is often associated with the Daf Yomi program, which encourages participants to study one daf each day. This initiative aims to complete the entire Talmud in approximately seven and a half years, fostering a deeper understanding of Jewish law and tradition.