bro.

A male having the same parents as another or one parent in common with another.

pl. also breth·ren (brěth'rən) One who shares a common ancestry, allegiance, character, or purpose with another or others, especially:

1. A kinsman.

2. A fellow man.

3. A fellow member, as of a fraternity, trade union, or panel of judges on a court.

4. A close male friend; a comrade.

5. A fellow African-American man or boy.

6. Abbr. Br. or Bro. A member of a men's religious order who is not in holy orders but engages in the work of the order.

7. A lay member of a religious order of men.

8. pl. also brethren A fellow member of the Christian church.

pl. also brethren Something, such as a corporation or institution, that is regarded as a member of a class: "A station that ... relies on corporate contributions or advertising to survive runs the risk of becoming virtually indistinguishable from its commercial brethren" (W. John Moore).

1. Abbr. Br. or Bro. A member of a men's religious order who is not in holy orders but engages in the work of the order.

2. A lay member of a religious order of men.

3. pl. also brethren A fellow member of the Christian church.