Definition: "Whitweek" is a noun that refers to a Christian holiday that occurs during the week starting on Whitsunday, which is also known as Pentecost. This holiday often includes special church services and celebrations. In many places, especially in the UK, Whitweek is a time for festivals and events.
"Whitweek" is a specific term used to describe a week of celebration in the Christian calendar that begins on Whitsunday.