blood brother

blood brother

n.

1. A brother by birth.

2. One of two individuals who vow mutual fidelity and trust by a ceremony involving the mingling of each other's blood.

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blood brotherhood n.

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blood brother

Noun

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

Thesaurus

Noun	1.	blood brother - a male with the same parents as someone else; "my brother still lives with our parents" brother big brother - an older brother little brother - a younger brother; "my little brother just had his 50th birthday" male sibling - a sibling who is male half brother, half-brother, stepbrother - a brother who has only one parent in common with you
	2.	blood brother - a male sworn (usually by a ceremony involving the mingling of blood) to treat another as his brother ally, friend - an associate who provides cooperation or assistance; "he's a good ally in fight"