close friend, bosom buddy / crony, chum

short for 橘氏 (Tachibana-uji): an ancient clan who often held high-ranking positions in the medieval Japanese court, descended from Agata no Inukai no Michiyo and later Tachibana no Moroe

Citrus tachibana, a species of wild, green, inedible citrus fruit native to Japan / Synonym of 唐橘 (kara-tachibana): the trifoliate orange, Citrus trifoliata, syn. Poncirus trifoliata

Citrus tachibana / the Tachibana clan

a female given name / a surname

Citrus tachibana

(chiefly women's speech) first person singular pronoun: I, me

private; mine

(polite) first-person singular pronoun: I, me

a personal or private matter / (by extension) selfishness