definition of
brotherhood

[1] #1 brotherhood n. the kinship relation between a male offspring and the siblings. wn

[2] #2 brotherhood n. [fraternity, sodality] people engaged in a particular occupation; "the medical fraternity". wn

[3] #3 brotherhood n. the feeling that men should treat one another like brothers. wn

[4] #4 brotherhood n. [union, labor union, trade union, trades union] an organization of employees formed to bargain with the employer; "you have to join the union in order to get a job". wn