close friend, bosom buddy / crony, chum

火口: the origin of a fire; an opening for ignition; the nozzle of a welder, etc; the opening through which the fire enters the barrel in a hinawajū; (volcanology) a crater / 杼口: / 樋口:

樋口: a surname

the origin of a fire / an opening for ignition / the nozzle of a welder, etc / the opening through which the fire enters the barrel in a hinawajū / (volcanology) a crater

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

a personal or private matter / selfishness / privacy, secrecy / (women's speech, obsolete) a brother-in-law

personal, private / secret

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

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

a personal or private matter / (by extension) selfishness