The Old Norse word eldr
Word eldr
e l d r
Meaning fire
Synonyms eisa

Other words that might be of interest
aska ‘ashes’, skírr ‘clear, bright’, døkkr ‘dark’, dimmar ‘dark, gloomy’, myrkr ‘dark, murky’, dimma ‘darkness’, logi ‘flame, blaze’, heitr ‘hot, burning’, skuggi ‘shadow’, reykr ‘smoke, steam’, sól ‘sun’, sunna ‘sun’