ides of March
March 15 in the ancient Roman calendar; the day in 44 b.c. on which Julius Caesar was assassinated.
Why Do We Say “Beware The Ides Of March”?The Ides of March, better known as March 15th, marks an inauspicious anniversary associated with treachery and ill fortune. But, how did a day that was once celebrated by the Romans become so heavily steeped in superstition?
The New Dictionary of Cultural Literacy, Third Edition Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.