Gemara n. : The second part of the Talmud, or the commentary on the Mishna (which forms the first part or text).

Example:
Can someone help me with Gemara Bava Kamma daf 20, please explain?

Taxonomy
Gemara, Mishnah, Talmud, Jerusalem Gemara, Babylonian Gemara, rabbis, sugya, Aramaic, Amoraim, Hebrew, free encyclopedia, tradition, logic, Tannaim, debates, Mishnaic, Deuteronomy, generation.

Defination from the web:
Gemara, which when combined with the Mishnah constituted the Talmud. ... The distinctive character of the gemara derives largely from the intricate use of argumentation and debate, described above. ...