brother

brother /ˈbrʌðɚ/ noun
plural brothers
brother
/ˈbrʌðɚ/
noun
plural brothers
Britannica Dictionary definition of BROTHER
[count]
1 
: a boy or man who has one or both of the same parents as you
— compare brother-in-law, half brother, stepbrother
2 
: a man who is from the same group or country as you
3 
plural brothers or brethren /ˈbrɛðrən/ : a male member of a religious group — used especially as a title
4 
US, informal : a black man — used especially by African-Americans
5 
US, informal — used when talking to a man
6 
chiefly US, informal — used as an interjection to express surprise or annoyance