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blood brother

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noun

a person's brother by birth.
a male person bound to another by ties of great friendship.
something usually associated with or thought to exist inseparably from another thing, quality, circumstance, etc.: Humility is often the blood brother of patience.
a male established in a close relationship with another male through the performance of a specific ritual, as the commingling of blood.

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RELATED WORDS

brother, bro

Nearby words

  1. blood alcohol concentration,
  2. blood and thunder,
  3. blood bank,
  4. blood bath,
  5. blood blister,
  6. blood capillary,
  7. blood cell,
  8. blood clot,
  9. blood count,
  10. blood crystal

Origin of blood brother

Middle English word dating back to 1350–1400
Related formsblood brotherhood, noun
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for blood brother

British Dictionary definitions for blood brother

blood brother

noun

a brother by birth
a man or boy who has sworn to treat another as his brother, often in a ceremony in which their blood is mingled
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