What is the meaning of Brother?

Son of the same parents as another person.

A male having at least one parent in common with another (see half-brother, stepbrother).

A male fellow member of a religious community, church, trades union etc.

A form of address to a man.

A fellow black man.

Somebody, usually male, connected by a common cause, situation, or affection.

Someone who is a peer, whether male or female.

Someone who is a kinsman or shares the same patriarch.

To treat as a brother.

Expressing exasperation.

A brother or brother-in-law; a male sibling.

A blood brother; a companion in a two-member loyalty pact.

Any male relative or family member.

A colleague or peer (sometimes as a term of address):

  1. A fellow (male) human being.
  2. A male friend or companion.
  3. A male fellow Christian (or other coreligionist).
  4. A male fellow member of a guild or religious order.
  5. A male fellow ruler.

A fellow (male) human being.

A male friend or companion.

A male fellow Christian (or other coreligionist).

A male fellow member of a guild or religious order.

A male fellow ruler.

Something similar or resemblant.

A brother; a male sibling.

A colleague or companion.

A fellow member of an organistion.

brother

bro (close friend)

alternative form of brither

bro, dude, brother

Source: wiktionary.org