1. The state of being brothers or a brother.
2. An association for any purpose, as a society of monks; a fraternity.
3. The whole body of persons engaged in the same business, especially those of the same profession; as, the legal or medical brotherhood.
4. Persons, and, poetically, things, of a like kind. A brotherhood of venerable trees. (Wordsworth)
Synonym: fraternity, association, fellowship, sodality.
Origin: brother _ -hood.