Where does “krøllejern” come from?

krøllejern (Danish) comes from Danish jern, from Old Danish jarn, from Old Norse járn, from Proto-Germanic īsarną, from Proto-Celtic īsarnom, from Proto-Indo-European h₁ésh₂r̥ — blood.

krøllejern (Danish): curling iron (for hair)

Definitions

curling iron (for hair)

Ancestry of “krøllejern”, step by step

krøllejern traces back through two separate lines of ancestry.

via Danish jern

Step	Language	Word	Meaning
1	Danish	jern	iron; a type of golf club
2	Old Danish	jarn	iron
3	Old Norse	járn	iron
4	Proto-Germanic	īsarną	iron
5	Proto-Celtic	īsarnom	iron
6	Proto-Indo-European	h₁ésh₂r̥	blood

via Danish krølle

Step	Language	Word	Meaning
1	Danish	krølle	curl; to curl
2	Middle Low German	krullen	—
3	Proto-Germanic	kruzlǭ	bent or crooked object, curl; that which is...
4	Proto-Germanic	grus-	—
5	Proto-Indo-European	gurus-	twist, curl

Every word from Proto-Indo-European h₁ésh₂r̥ →Every word from Proto-Celtic īsarnom →Every word from Proto-Germanic īsarną →