Definition of "watch night" []

• New Year's Eve. (noun)
• A religious service held on New Year's Eve. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "It is hard to them to pray continually, and not to faint; to stand in their watch night and day against the inroads of their spiritual adversaries; to keep themselves from the insinuations of the world, and up unto those sacrifices of charity and bounty that are so well-pleasing to God."