Definitions for "Whitsunday"
The seventh Sunday, and the fiftieth day, after Easter; a festival of the church in commemoration of the descent of the Holy Spirit on the day of Pentecost; Pentecost; -- so called, it is said, because, in the primitive church, those who had been newly baptized appeared at church between Easter and Pentecost in white garments.
White Sunday, day of baptism, so called because of the white garments traditionally worn by baptismal candidates.
Alternate name for Pentecost, the Christian celebration of the coming of the Holy Spirit on the community of the faithful. White robes are used in worship.
Keywords:  note, term, see
See the Note under Term, n., 12.