Where does “eldkastare” come from?

eldkastare (Swedish) comes from Swedish eld, from Old Swedish elder, from Old Norse eldr, from Proto-Germanic ailidaz, from Proto-Germanic ailijaną, from Proto-Indo-European h₂eydʰ- — to ignite; fire.

eldkastare (Swedish): a flamethrower

Definitions

a flamethrower

Ancestry of “eldkastare”, step by step

eldkastare traces back through two separate lines of ancestry.

via Swedish eld

Step	Language	Word	Meaning
1	Swedish	eld	fire, a continued chemical exothermic reaction...
2	Old Swedish	elder	fire; a skin disease - possibly erysipelas
3	Old Norse	eldr	fire
4	Proto-Germanic	ailidaz	fire, pyre
5	Proto-Germanic	ailijaną	to kindle
6	Proto-Indo-European	h₂eydʰ-	to ignite; fire

via Swedish kastare

Step	Language	Word	Meaning
1	Swedish	kastare	a pitcher
2	Swedish	kasta	to throw; make an object fly through the air; to...
3	Old Swedish	kasta	to throw, cast
4	Old Norse	kasta	to cast, to throw
5	Proto-Germanic	kastōną	to throw
6	Proto-Germanic	kas-	to throw; bring up; toss

Every word from Proto-Indo-European h₂eydʰ- →