Meanings

productive age

working-age population

middle-aged man

middle-aged woman

adult ward

adult guardian

have a happy New Year

chronology

list of kanji by school year

drinks to celebrate the New Year (sake, wine, etc.)

morning of the New Year

to age

the Young Turks

advanced juvenile training school

juvenile prison

visiting a shrine on New Year's Eve and staying there until (or returning on) New Year's Day

by the end of this year

winter annual

first-year ice

second-year ice