noun
marriageable age of a young woman; sweet sixteen
Literary and somewhat dated term for a young woman's prime years, often with a nuance of sexual attractiveness and marriageability. Not used in casual conversation; encountered mainly in older literature or poetic contexts.
彼女は芳紀まさに十八、というたたずまいだった。
She had the air of a young woman just at the peak of her youth, around eighteen.