blood brother

noun

1. a person's brother by birth.
2. a male person bound to another by ties of great friendship.
3. something usually associated with or thought to exist inseparably from another thing, quality, circumstance, etc.:

   Humility is often the blood brother of patience.

4. a male established in a close relationship with another male through the performance of a specific ritual, as the commingling of blood.

blood brother

noun

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

Other Words From

• blood brotherhood noun

Word History and Origins

Origin of blood brother¹

Middle English word dating back to 1350–1400

Example Sentences

His own blood brother and handler Man tries to make Captain admit that he's more American than Vietnamese now.

From Salon

“Gangsta Boo was like a sister to me and told the world about me the way my blood brother did,” Drumma Boy said in a statement.

From Seattle Times

“Does that mean I can ask about your...your blood brother?”

From Literature

It was clear now that Jay didn’t want us to get far apart like I thought he did when he wanted Tony to be his blood brother.

From Literature

But he grew closest with Roberts, who dubs him “good as gold as a friend” and a “blood brother.”

From Washington Post