childhood diseases

hospitalisation

to enter the hospital, to be hospitalized

young child, infant

one's sister regardless of age difference / one's lover or sweetheart who is the subject of marriage or is already married / (archaic, said from a female speaker) a close female companion

altitude sickness

one's own younger sister / the wife of one's younger brother; one's sister-in-law / a younger female / (archaic, said from a male speaker) one's sister regardless of age difference

(rare) Same as いもうと (imōto) above

a placename

Same as いもうと (imōto) above