'Whitsun Tuesday' definitions:

Definition of 'Whitsun Tuesday'

(from WordNet)
noun
The day after Whitmonday [syn: Whit-Tuesday, Whitsun Tuesday]

Definition of 'Whitsun Tuesday'

From: GCIDE
  • Whittuesday \Whit"tues`day\, n. (Eccl.) The day following Whitmonday; -- called also {Whitsun Tuesday}. [1913 Webster]