close friend, bosom buddy / crony, chum

(vulgar) pudendal cleft

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

(go, shogi) tesuji

(anatomy) either the spine, or the middle groove of the back along the spine / (clothing) the middle seam of the back

blue veins

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

a personal or private matter / (by extension) selfishness

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

personal, private / secret