noun
or shemini a·tze·ret or shemini a·ze·ret shəˈmēˌnēäˈtse(ˌ)ret(h), -res
Usage: usually capitalized S&A
Etymology: Late Hebrew shĕmīnī 'ăṣereth, from Hebrew shĕmīnī eighth + 'ăṣereth assembly, convocation
: a Jewish festival observed on the 22d day of Tishri, following the 7th day of Sukkoth proper, and marked by a memorial service and a special prayer for seasonal rain