The definition of a brother is a boy or man with siblings, or a person who shares something in common with another person.(noun)
See brother in Webster's New World College Dictionary
Origin: ME < OE brothor < IE base *bhrāter > Goth brothar, L frater, OIr brāthir, Sans bhrātar, Gr phratēr
See brother in American Heritage Dictionary 4
noun pl. broth·ers
Origin: Middle English
Origin: , from Old English brōthor; see bhrāter- in Indo-European roots.
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