'Pentecostal' definitions:

Definition of 'pentecostal'

(from WordNet)
adjective
Of or relating to or characteristic of any of various Pentecostal religious bodies or their members
adjective
Of or relating to or occurring at Pentecost
noun
Any member of a Pentecostal religious body [syn: Pentecostal, Pentecostalist]

Definition of 'Pentecostal'

From: GCIDE
  • Pentecostal \Pen`te*cos"tal\, a. Of or pertaining to Pentecost or to Whitsuntide. [1913 Webster]