Pen‧te‧cost /ˈpentɪkɒst $ -kɒːst, -kɑːst/ noun [uncountable and countable]
[Date: 1000-1100; Language: Late Latin; Origin: pentecoste, from Greek, 'fiftieth day', from pentekostos 'fiftieth']

1. (also Whitsun British English) the seventh Sunday after Easter, when Christians celebrate the appearance of the Holy Spirit to the apostles

2. a Jewish religious holiday 50 days after Passover

[TahlilGaran] Dictionary of Contemporary English ▲