Easter
/ˈiːstə(r)/noun
1- the most important and oldest festival of the Christian Church, celebrating the resurrection of Christ and held (in the Western Church) between 21 March and 25 April, on the first Sunday after the first full moon following the northern spring equinox复活节（基督教最重要、最古老的节日, 纪念“耶稣复活”, 西方教会在每年3月21日至4月25日之间北半球春分月圆后的第一个星期日庆祝）。
1.1
- the period in which this occurs, especially the weekend from Good Friday to Easter Monday复活节期间（尤指从受难节星期五至复活节星期一的那个周末）。
词源
Old English ēastre; of Germanic origin and related to German Ostern and EAST. According to Bede the word is derived fromĒastre, the name of a goddess associated with spring.