Definitions
Bioluminescence created by some types of fungus, particularly those growing on rotting wood.
Word origin
Possibly from fox + fire, though the semantic connection is unclear. Alternatively, the first element may be ultimately from Old French fols (“false”), or the term may derive by folk etymology from phosphor.
Used in a sentence
“Perhaps you've seen a foxfire in the woods. Well, in the dark, it looks like a live, burning coal; but when you go to it, and take it up, it's only a piece of rotten wood.”
“The rain stopped falling. They passed, leaving a trail of foxfire shuffled up out of the wet leaves like stars plowed in a ship's wake.”
“When they died, the others built fires to smoke them, and then covered them with birch bark. Every bit was covered with bark. Not a hair was left out, and nothing could go in. They'd put sticks of fox fire near them.”
Source: Wiktionary, CC BY-SA 4.0
Used as a crossword answer2 curated clues
01“Woodland glow”7 letters
02“Fungal glow”7 letters
Not quite right?
"Search similar patterns."
F______