brothers

基本解释

brother指“兄”或“弟”皆可,“兄”是“elder brother”,“弟”是“younger brother”。但除了必須分清是“兄”還是“弟”時外,習慣上不論“兄”還是“弟”,都用brother。在美國通常不用elder brother,而用older brother。與brother相對應的隂性名詞是sister。
brother可指親兄弟,也可指同父異母或同母異父兄弟,或繼父與其前妻或繼母與其前夫之子,不指堂或表兄弟。但引申可指“同行,同事”解。
brother作“教友”“會友”解時,它的複數形式是brethren。
brother可用作稱呼語。

Your brother is a boy or a man who has the same parents as you.
&rarrsee also half brother , stepbrother
You can describe a man as your brother if he belongs to the same race, religion, country, or profession as you, or if he has similar ideas to you.
Brother is a title given to a man who belongs to a religious community such as a monastery.
Brothers is used in the names of some companies and stores.