(Yiddish) a long boring tediously detailed account
"he insisted on giving us the whole megillah"
(Judaism) the scroll of parchment that contains the biblical story of Esther; traditionally read in synagogues to celebrate Purim
any of the Five Scrolls of the Hebrew Scriptures (Song of Songs, Ruth, Lamentations, Ecclesiastes, and Esther)
A long, overblown story or fuss; a to-do.