Akutabi fire kanji

𪹶 is a rare Japanese-made kanji read あくたび (akutabi), a fire for burning rubbish—especially seaweed and other debris gathered from shore by fishers. The word 芥火 appears in a poem in the Shūi Wakashū, a Japanese poetry anthology, around 1005–07, and a Japanese character dictionary records this glyph for it. The form puts 暏, an older character associated with daybreak, above 火 (“fire”).