say it: BRUHTH-ur
brother is a noun meaning "a male with the same parents as someone else". It carries 5 recorded senses.
a male with the same parents as someone else
“my brother still lives with our parents”
a male person who is a fellow member (of a fraternity or religion or other group)
“none of his brothers would betray him”
religion
(Roman Catholic Church) a title given to a monk and used as form of address
“a Benedictine Brother”
Roman Catholic
Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.
Definitions, synonyms and semantic relations for brother come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.