Note:  Do not rely on this information. It is very old.

Pentecost

Pentecost (Greek, "fiftieth"), a name used to represent (1) the Hebrew Feast of Weeks and thanksgiving for the first-fruits, which took place lifty days after the Passover; and (2) the Christian festival of Whitsuntide, which commemorates the descent of the Holy Ghost, the first-fruits of the Spirit.