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1. An hour when supernatural events are thought to occur, especially midnight.
2. The hour before the closing of the stock market on the third Friday of the month, when two or more classes of options or futures expire, known for its high trading volume and volatile prices.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
(Alternative Belief Systems) the witching hour the hour at which witches are supposed to appear, usually midnight
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
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