n.
See Pentecost (sense 1).
[Middle English whitsonday, from Old English hwīta sunnandæg, White Sunday (from the white ceremonial robes worn on this day) : hwīt, white; see white + sunnandæg, Sunday; see Sunday.]
The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2009. Published by Houghton Mifflin Company. All rights reserved.
