noun
partly burned charcoal; charcoal that has been extinguished
Refers to charcoal that has been put out before burning completely, often used in traditional settings or for specific crafts.
火鉢の中には消し炭が残っていた。
Partly burned charcoal remained in the brazier.
消し炭を使って絵を描く技法がある。
There is a technique of drawing pictures using extinguished charcoal.
noun
servant boy at a brothel or teahouse (archaic)
Archaic term for a young male servant in Edo-period pleasure quarters or teahouses. Not used in modern Japanese.
江戸時代の遊郭では、消し炭と呼ばれる少年が雑用をしていた。
In Edo-period brothels, a boy called keshizumi did odd jobs.