Buddha's death; specifically refers to the passing (parinirvana) of the Buddha.
仏滅は釈迦の入滅に由来する言葉だ。
Butsumetsu is a term derived from the Buddha's passing.
One of the traditional 'rokuyō' days—considered very unlucky; many people avoid holding weddings or celebratory events on this day.
結婚式の日取りを決めるとき、仏滅は避ける家庭が多い。
When setting a wedding date, many families avoid a butsumetsu day.
カレンダーに今日は仏滅と書いてあり、親戚が心配している。
The calendar says today is butsumetsu, and relatives are worried.