/ ˌjɒm ˈkɪpə(r); kɪˈpʊə(r); NAmE ˌjɑːm kɪˈpʊr; ˌjɔːm/ noun
[ U ] a Jewish religious holiday in September or October when people eat nothing all day and say prayers of penitence in the synagogue , also known as the Day of Atonement
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WORD ORIGIN
Hebrew .