D defs.my
Entry 1 sense Webster, 1913

Whitsun

/wĭtʹsən/ · Whit·sun · IPA /ˈwɪt.sən/
01 a. Of, pertaining to, or observed at, Whitsuntide; as, Whitsun week; Whitsun Tuesday; Whitsun pastorals.
  1. 1.
    Of, pertaining to, or observed at, Whitsuntide; as, Whitsun week; Whitsun Tuesday; Whitsun pastorals.