blood brother

noun

1
: a brother by birth
2
: one of two men pledged to mutual loyalty by a ceremonial use of each other's blood
blood brotherhood noun

Examples of blood brother in a Sentence

He would never betray me—he's my blood brother.
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Trending The Milli Vanilli story is a lot like how Monsters presents Erik and Lyle: two blood brothers trapped in a miserable lie, with nobody to trust except each other, vulnerable but hiding behind a glam facade. Rob Sheffield, Rolling Stone, 12 Oct. 2024 Known as the Lotus Elise's blood brother, the VX220 was built from 2000 to 2005. Matthew MacConnell, Forbes, 9 Oct. 2024 Not only was Philips instrumental in starting TSMC, but TSMC’s blood brother in chipmaking is now ASML, the photolithography giant based in Veldhoven. Chips, the ones without ketchup, would eventually take the place of umbrellas and Barbie dolls in Taiwan’s economy. Virginia Heffernan, WIRED, 21 Mar. 2023 Lil Gotit, Render’s blood brother and fellow Atlanta rapper, shared the news on Instagram late Friday evening. Shirley Ju, Variety, 14 May 2022 My actual, blood brother. Steve Millar, chicagotribune.com, 28 Oct. 2021 Bon, his blood brother, is still determined to kill communists and has no idea that the narrator is one. Washington Post, 22 Feb. 2021 His blood brother Storm Shadow is also his archenemy. NBC News, 10 Jan. 2020

Word History

First Known Use

1799, in the meaning defined at sense 1

Time Traveler
The first known use of blood brother was in 1799

Browse Nearby Words

Cite this Entry

“Blood brother.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/blood%20brother. Accessed 10 Sep. 2025.

More from Merriam-Webster on blood brother

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!