noun
beginning of winter
Obsolete term for the start of winter, used in classical Chinese-influenced contexts. In modern Japanese, 初冬 (しょとう) is the common word.
古い暦では、孟冬は立冬の頃を指した。
In the old calendar, 孟冬 referred to the time around the beginning of winter.
noun
tenth month of the lunar calendar
Refers specifically to the tenth month in the traditional lunar calendar, roughly corresponding to November. This usage is obsolete outside historical or literary contexts.
孟冬は旧暦十月の異名として使われた。
孟冬 was used as another name for the tenth month of the lunar calendar.