chet
"Missing the mark;" a Hebrew term for sin.
Elul
The Hebrew month preceding Rosh HaShanah during which one engages in self-reflection and evaluation in preparation for the High Holidays. Traditionally, the shofar is blown each day during the month.
g'mar chatimah tovah
"A good final sealing;" a High Holiday greeting used between Rosh HaShana and Yom Kippur. Often abbreviated as g'mar tov.
High Holidays
Rosh HaShanah and Yom Kippur
Kol Nidre
"All Vows;" prayer recited on the eve of Yom Kippur, the holiest day on the Jewish calendar;
L’Shanah Tovah Tikateivu
"May you be inscribed [in the Book of Life] for a good year" is a greeting offered on Rosh HaShanah.
machzor
"Cycle;" High Holiday prayerbook; plural: machzorim.
N'ilah
Literally, “locking.” The service that concludes Yom Kippur. The name alludes to the metaphorical locking of the heavenly gates at the end of the day.
Shabbat Shuvah
"Sabbath of Return;" the Shabbat (sabbath) between the holidays of Rosh HaShanah and Yom Kippur. A special haftarah is read and traditionally the rabbi gives a sermon related to repentance.
shofar
Ram’s horn most commonly blown throughout the month of Elul and during the High Holiday season.