brother

noun

broth·​er ˈbrə-t͟hər 

plural brothers also brethren ˈbret͟h-rən 

ˈbre-t͟hə-rən,

-t͟hərn

1

: a male who has the same parents as another or one parent in common with another

2

: one related to another by common ties or interests

3

: a fellow member

—used as a title for ministers in some evangelical denominations

4

: one of a type similar to another

5

a

: kinsman

b

: one who shares with another a common national or racial origin

especially : a Black boy or man : soul brother

6

a

capitalized : a member of a congregation of men not in holy orders and usually in hospital or school work

b

: a member of a men's religious order who is not preparing for or is not ready for holy orders

a lay brother

Examples of brother in a Sentence

We must support our brothers and sisters fighting overseas.

the brothers in a monastery

Recent Examples on the Web

Crawford is his own man and will make his own decisions, but little brother is on to something. —Brian Mazique, Forbes.com, 17 Sep. 2025

The third entry in Murphy and Brennan’s true crime anthology series—previous installments have centered on Jeffrey Dahmer and the Menendez brothers—stars Charlie Hunnam as Gein and Laurie Metcalf as his mother. —Walden Green, Pitchfork, 17 Sep. 2025

King Charles’ brother, Prince Andrew, has been tainted by his own friendship with Epstein. —Dan Mangan, CNBC, 17 Sep. 2025

Joseph Gladney, 26, was convicted of voluntary manslaughter with an enhancement for personal use of a firearm in the shooting death of 25-year-old Vinson Bragg, as well as a charge of threatening to kill another half-brother who lived in the family home. —Nate Gartrell, Mercury News, 16 Sep. 2025

Word History

Etymology

Middle English, from Old English brōthor; akin to Old High German bruodor brother, Latin frater, Greek phratēr member of the same clan

First Known Use

before the 12th century, in the meaning defined at sense 1

Phrases Containing brother

• big brother
• blood brother
• brother-in-law
• brother/sister/comrade in arms
• foster brother/sister
• half brother
• little brother/sister
• soul brother

Rhymes for brother

• mother
• nother
• other
• smother
• souther
• another
• godmother
• grandmother
• stepbrother
• stepmother

Kids Definition

brother

noun

broth·​er ˈbrət͟h-ər 

plural brothers also brethren ˈbret͟h- (ə-)rən 

ˈbret͟h-ərn

1

: a male who has one or both parents in common with another

2

: a male relative

3

: a fellow member of a group