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first blood

British  

noun

  1. the first killing or wounding in a fight or war

  2. the first damage or reverse inflicted on an opponent in a conflict

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

According to the researchers, this indicates that the first blood cells likely emerged around the same time multicellular animals first appeared on Earth.

From Science Daily • May 27, 2026

Pegula swung the momentum her way and drew first blood in the final set, opening up a 4-1 gap with an inch-perfect lob.

From Barron's • Feb. 20, 2026

Earlier, the Dodgers drew first blood on Halloween night as Tommy Edman doubled, Shohei Ohtani was intentionally walked, and Smith's double to left field sent Edman home.

From BBC • Oct. 31, 2025

The brothers are now the first blood relatives to each have titles at the legendary tournament.

From Los Angeles Times • Aug. 20, 2023

Beyond his tree, as he slept, the first blood light of dawn was rising up the sky.

From "The Killer Angels: The Classic Novel of the Civil War" by Michael Shaara

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