Blood brother

/blˈʌd bɹˈʌðə/

/blˈʌd bɹˈʌðɚ/

Blood brother

a male with the same parents as someone else

synonyms : brother

antonyms : sister

a male sworn (usually by a ceremony involving the mingling of blood) to treat another as his brother

Examples

1. Here's the result: blood brothers.

2. Cole literally calls my brother blood brother.

3. The blood brothers, from now on, will live 800 years, because of the techniques we have used.

4. You believe your girlfriend is sleeping with your blood brother?