brother

/ˈbɹɐðɘ(ɹ)/noun

A male child of the same mother and father as someone else.

Example sentence

“My older brother taught me how to ride a bike.”

Extends to fellow members of a group: union members, monks, and fraternity members all call each other brothers.

Related words

daughterA person's female child.sisterA girl or woman who has the same parents as another person.grandmotherThe mother of your mother or father.fatherA man who has a child, whether by birth, adoption, fostering, or raising the child as his own.grandfatherThe father of your mother or father.motherA woman who has a child, whether by giving birth, adopting, or fostering; a female parent.