noun, masculine/sa.ba/plural: sabbats
Sabbath, biblical seventh day; witches' Sabbath, meeting of witches at midnight; noisy meeting
“Les juifs observent fort exactement le sabbat.” — Jews observe Shabbat very strictly.
Borrowed from Latin sabbatum, from Ancient Greek σάββατον (sábbaton, “Sabbath”), from Hebrew שבת (shabát, “Sabbath”). In regards to the semantic evolution to "witches' meeting" compare with ramdam, brouhaha. See also samedi.