1A characteristic or peculiarity of the language of the rabbis; a rabbinical expression. Formerly also: †rabbinical language or discourse.
2The teaching or doctrines of the Talmud and the later rabbinical writings; adherence to these teachings; rabbinic argumentation.
Mid 17th century; earliest use found in Joseph Mede (1586–1638), Hebraist and biblical scholar. From rabbin + -ism.