enter

room (of a house or hotel), chamber, apartment, flat / (sumo) a stable where rikishi live and train together under a shisho oyakata (stable master)

a mouse or a rat / general term for members of superfamily Muroidea, including mice, rats, voles, hamsters, gerbils, and other similar rodents

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

to go in; to come in / 要る: to be necessary, to be required

鼠: mouse, rat / 杜松: temple juniper

to enter, go into, get into a place or a thing / to join a group or organization / to be contained (in), to be included (in) / to be a member of a group, set, category

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

a personal or private matter / (by extension) selfishness

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