Pentecost
/ˈpentɪkɔst; ?@ -kɔ:st; `pɛntɪˌkɔst/ n[sing]
1 Jewish harvest festival that takes place fifty days after the second day of the Passover （犹太人的）五旬节（庆祝收获的节日, 为逾越节次日起之50日）.
2 (Brit also Whitsunday) (in the Christian Church) seventh Sundayafter Easter, commemorating the descent of the Holy Ghost on the apostles （基督教的）圣灵降临节（复活节後第七个星期日）.