Definition of: Mishna

(mish′nə) noun plural Mish·na·yoth (mish′·nä·yōth′)
1. The first part of the Talmud, consisting of a collection of traditions and decisions made by Rabbi Juda, called the Holy (born about A.D. 150), summing up all previous rabbinical labors.
2. A paragraph of this collection.
3. The opinion of any notable expounder of the Jewish law; also, the sum and substance of his teachings. Also Mish′nah. [<Hebrew mishnāh repetition, oral law <shānāh repeat, teach]
—Mish·na·ic (mish·nā′ik), Mish′nic or ·ni·cal adjective