- fifteen years old(literary) Refers to being fifteen years old, based on a passage in the "Analects" where Confucius states he set his mind on learning at that age.
- 之 particle[possessive]Connects a describing word or phrase to the noun it describes, similar to 的 but used in formal or literary writing.
- 年 nounagea person's age or a specific stage in a person's life