What is the meaning of 兄?

elder brother

elder brother-in-law

short for 花の兄 (hana no ani): alternative name for the 梅 (ume), the Japanese plum (Prunus mume)

an elder brother

pronoun referencing an older brother figure: you, he

attaches to a name referencing an older brother figure: Mister, Mr.

the eldest sibling

a woman's brother (regardless of age difference)

a woman's lover or husband

a familiar man

eldest son

a senior

an elder sibling

the head of a clan

a skilled craftsman

elder brother

Source: wiktionary.org