grogger
"Noisemaker" (Hebrew); used to drown out Haman's name during the M'gillah reading on Purim.
hamantaschen
Triangle-shaped pastries commonly filled with apricot jam or poppyseed spread (or other fillings) and eaten on Purim; the shape represents Haman's hat or ears
m'gillah
"Scroll;" One of the five m'gillot (plural) in the Bible: Esther, Song of Songs, Ruth, Lamentation and Ecclesiastes.
mishloach manot
"Sending of portions" (Hebrew). Baskets of sweets and other foods exchanged among friends on Purim.
(the) Omer
The 49-day period that begins on the second night of Passover and ends on Shavuot.
Purim
"Lots" (Hebrew). Holiday that commemorates Queen Esther's actions to save the Jews of Persia from death; marked by a festive reading of the story, contained in the Scroll of Esther.
Purim spiel
Humorous play performed as part of the celebration of Purim.
Shabbat Zachor
"Shabbat of Remembrance;" the Shabbat immediately preceding Purim, it takes its name from the additional Torah portion--Deuteronomy 25:17-19--read that day--which begins with the word zachor (remember).
Shavuot
"Weeks;" festival that commemorates the giving of the Torah to Moses atop Mt. Sinai.
Tu BiShvat
"15th of Shevat;" New Year of the Trees; Jewish Arbor Day, which is a minor festival.