Where does “tjärn” come from?

tjärn (Swedish) comes from Old Norse tjǫrn, from Proto-Germanic ternō, from Proto-Indo-European der- — to split, to separate; to tear, to crack, to...

tjärn (Swedish): a tarn

Definitions

a tarn

Ancestry of “tjärn”, step by step

Step	Language	Word	Meaning
1	Old Norse	tjǫrn	small lake, pond, tarn; pool
2	Proto-Germanic	ternō	a mountain lake without tributaries; watering...
3	Proto-Indo-European	der-	to split, to separate; to tear, to crack, to...

Every word from Proto-Indo-European der- →Every word from Proto-Germanic ternō →Every word from Old Norse tjǫrn →