blood brother
noun
Definition of blood brother
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
nounIndulge Your Inner Word Nerd
Examples of blood brother in a Sentence
He would never betray me—he's my blood brother.
First Known Use of blood brother
1799
BLOOD BROTHER Defined for English Language Learners
blood brother
noun
Definition of blood brother for English Language Learners
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: a man or boy who has promised to be loyal to another man or boy usually in a ceremony in which they mix their blood
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