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jubilee |ˈjoōbəˌlē; ˌjoōbəˈlē|
noun
a special anniversary of an event, esp. one celebrating twenty-five or fifty years of a reign or activity : [as adj. ] jubilee celebrations.
• Judaism (in Jewish history) a year of emancipation and restoration, celebrated every fifty years.
• (in full Jubilee Year) a period of remission from the penal consequences of sin, granted by the Roman Catholic Church under certain conditions for a year, usually at intervals of twenty-five years.