blood brother
noun
1 blood brother
A male with the same parents as someone else.
synonym: brother.
Dutch: halfbroeder, halfbroer
Polish: brat, braciak
2 blood brother
A male sworn (usually by a ceremony involving the mingling of blood) to treat another as his brother.
Moby thesaurus: aunt, auntie, brethren, brother, bub, bubba, bud, buddy, country cousin, cousin, cousin once removed, cousin twice removed, daughter, father, first cousin, foster brother, frater, grandnephew, grandniece, granduncle ... show more.
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