(literary) they (about women or girls)

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

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

arrival at a location / (archaic) the wearing of clothing / (archaic) a kimono / (archaic, possibly obsolete) in the area around Edo, short for 巾着切り (kinchaku kiri, “a cutpurse”)

(literary) they (about women or girls)

expenses

sneak into, slip into

to obtain, to come into possession, to become available

to be proficient, skilled, experienced

ashamed and unable to show one's face