Definition of: Sabbath

(sab′əth) noun
1. The seventh day of the week, appointed in the decalog as a day of rest to be observed by the Jews; now, Saturday.
2. The first day of the week as observed by Christians; Sunday.
3. The institution or observance of a day or time of rest.
4. The sabbatical year of the Jews. Lev. xxv 4. [Fusion of OE sabat and OF sabbat, sabat, both <L sabbatum <Gk. sabbaton <Hebrew shabbāth <shābath rest]
—Sab·bat′ic or ·i·cal adjective
—Sab·bat′i·cal·ly adverb Synonym: Sunday. Sabbath carries a suggestion of rest not in Sunday, the first day of the week. See FIRST DAY.