πεντηκοστή G4005
pentēkostḗ · pen-tay-kos-tay' · Noun Feminine
feminine of the ordinal of πεντήκοντα; fiftieth (ἡμέρα being implied) from Passover, i.e. the festival of "Pentecost":--Pentecost.
3 Occurrences in the King James Bible
Acts 2:1And when the day of Pentecost was fully come, they were all with one accord in one place.
Acts 20:16For Paul had determined to sail by Ephesus, because he would not spend the time in Asia: for he hasted, if it were possible for him, to be at Jerusalem the day of Pentecost.
1 Corinthians 16:8But I will tarry at Ephesus until Pentecost.