She·mi·ni A·tze·reth 
(shə-mēnē ät-sĕrəs, -ət)
(shə-mēnē ät-sĕrəs, -ət)n.
Judaism
Judaism
A festival happening after the seventh day of Sukkot, marked by a service in memory of the dead and a special prayer for rain.
[Hebrew šəmînî 'ăṣeret, eighth (day) of assembly : šəmînî, eighth (from šəmōne, eight; see ṯmny in the Appendix of Semitic roots) + 'ăṣeret, assembly (from 'āṣar, to retain; see ʿṣr in the Appendix of Semitic roots).]