Rare spelling of 兄弟 (“siblings”, literally “elder brother and younger brother”).

(honorific) older sister

elder brothers and sisters; elder sibling

someone else's younger sister

sworn younger sister

younger paternal half sister

a wife's sister

(archaic, men's speech) an intimate form of address for a female by a male: "my sister"

(anthropology) ethnography - the branch of anthropology that scientifically describes specific human cultures and societies.

a demoiselle crane