(n.) The week commencing with Whitsunday, esp. the first three days -- Whitsunday, Whitsun Monday, and Whitsun Tuesday; the time of Pentecost.

Advent Allhallowmas Allhallows Allhallowtide Annunciation Annunciation Day Ascension Day Ash Wednesday Candlemas Candlemas Day Carnival Christmas Corpus Christi Easter Easter Monday Easter Saturday Easter Sunday Eastertide Ember days Epiphany Good Friday Halloween Hallowmas Holy Thursday Holy Week Lady Day Lammas Lammas Day Lammastide Lent Lententide Mardi Gras Martinmas Maundy Thursday Michaelmas Michaelmas Day Michaelmastide Palm Sunday Pancake Day Passion Week Pentecost Quadragesima Quadragesima Sunday Septuagesima Shrove Tuesday Trinity Sunday Twelfth-day Twelfth-tide Whit-Tuesday White Sunday Whitmonday Whitsun Whitsunday Whitweek