Unscramble

f 4 i 1 r 1 e 1 d 2 a 1 m 3 p 3

8 letters · 16 points in Scrabble

Meaning

noun a mixture of gases (mostly methane) that form in coal mines and become explosive when mixed with air

originFrom fire + damp with 'damp' not in the usual sense of 'moist' but old German, modern Dutch, Danish 'damp' as steam or vapour, hence a gas liable to catch fire.

Etymology from Wiktionary, CC BY-SA 3.0

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