wolf moon; first full moon of the year
A loanword from English, referring to the first full moon in January. Used in contexts related to astronomy, folklore, or modern cultural references.
1月の最初の満月はウルフムーンと呼ばれる。
The first full moon in January is called the wolf moon.
Borrowed from English 'wolf moon', a name for the first full moon of the year, originating from Native American or colonial American folklore.