family purity -- Torah guidelines regarding sexual relations, observed by married couples
fast days -- introduced by the prophets in ancient times, as days of national introspection
fleishig -- lit.: meaty; food that contains meat, and must not be eaten with food that contains milk (milchig)
four species -- lulav, etrog, myrtle and willow -- waved each day on Sukkot in the synagogue, during the recitation of the Hallel prayers of praise
