■ noun
1》 (often the Sabbath ) a day of religious observance and abstinence from work, kept by Jews from Friday evening to Saturday evening, and by most Christians on Sunday.
2》 (also witches' ~ ) a supposed annual midnight meeting held by witches.
Origin
OE, from L. sabbatum , via Gk from Heb. šabbāṯ , from šā ḇ aṯ 'to rest'.