閏〔闰〕 jeon⁶ {rùn}

1. intercalary
2. an extra day or month inserted into the lunar or solar calendar (such as February 29)

閏日〔闰-〕 jeon⁶ jat⁶ {rùn rì}

intercalary day; leap day

閏月〔闰-〕 jeon⁶ jyut⁶ {rùn yuè}

1. intercalary month in the lunar calendar
2. leap month

閏年〔闰-〕 jeon⁶ nin⁴ {rùn nián}

1. leap year
2. (lunar calendar) year with a thirteen intercalary month