noun
embers; cinders; burnt residue
Refers to the remains of something that has burned, such as charcoal, ash, or the leftover bits after a fire.
キャンプファイヤーの後、燃え殻を片付けた。
After the campfire, we cleaned up the embers.
タバコの燃え殻が灰皿にたまっている。
Cigarette butts and ash have piled up in the ashtray.
Compound of 燃え (continuative form of 燃える 'to burn') + 殻 'husk, shell', literally 'burnt husk'.