noun
or shab·bath shu·bah or shab·bat shu·vah or shab·bath shu·vah ˌshäbəs(h)ˈshüvə
Usage: usually capitalized both Ss
Etymology: Late Hebrew shabbāth shūbhāh, literally, Sabbath of return; from the fact that Hebrew shūbhāh (return) is the first word of the haftarah read on that day
: the Jewish Sabbath that falls between Rosh Hashanah and Yom Kippur