The Proto-Celtic word *dumāko-
Word *dumāko-
Meaning mist
Synonyms *dengwo

Other words that might be of interest
*sūl- ‘sun’, *loukno- ‘moon’, *ster ‘star’, *moudo ‘cloud’, *kewok- ‘fog’, *mūko- ‘smoke’, *dwijat ‘smoke’, *taφnos- ‘fire’, *aidu ‘fire’, *angelo- ‘fire, light’, *onno ‘ash’, *loutwi ‘ashes’, *dubu ‘dark, black’, *skalī- ‘shadow’