Where does “abc-barn” come from?

abc-barn (Norwegian Bokmål) comes from Norwegian Bokmål barn, from Old Norse barn, from Proto-Germanic barną, from Proto-Indo-European bʰēr- — shiny, light brown.

abc-barn (Norwegian Bokmål): a child who have just started school and is learning their ABC's

Definitions

a child who have just started school and is learning their ABC's

Ancestry of “abc-barn”, step by step

abc-barn traces back through two separate lines of ancestry.

via Norwegian Bokmål barn

Step	Language	Word	Meaning
1	Norwegian Bokmål	barn	a child
2	Old Norse	barn	child
3	Proto-Germanic	barną	child
4	Proto-Indo-European	bʰēr-	shiny, light brown

via Norwegian Bokmål abc

Step	Language	Word	Meaning
1	Norwegian Bokmål	abc	ABC; a textbook in reading or spelling; basic...
2	English	ABC	The alphabet; A type of poem in which the lines...
3	Middle English	abece	An alphabet; the Latin alphabet

Every word from Proto-Indo-European bʰēr- →Every word from Proto-Germanic barną →Every word from Old Norse barn →