Where does “tegnspråk” come from?

tegnspråk (Norwegian Bokmål) comes from Norwegian Bokmål tegn, from Danish tegn, from Old Danish thæghæn, from Old Norse þegn, from Proto-Germanic þegnaz, from Proto-Indo-European teḱ- — to sire, beget.

tegnspråk (Norwegian Bokmål): sign language

Definitions

sign language

Ancestry of “tegnspråk”, step by step

tegnspråk traces back through two separate lines of ancestry.

via Norwegian Bokmål tegn

Step	Language	Word	Meaning
1	Norwegian Bokmål	tegn	a sign; a character; imperative of tegne
2	Danish	tegn	sign; token; character
3	Old Danish	thæghæn	—
4	Old Norse	þegn	thane, franklin, freeman, man; a good man;...
5	Proto-Germanic	þegnaz	retainer, servant
6	Proto-Indo-European	teḱ-	to sire, beget

via Norwegian Bokmål språk

Step	Language	Word	Meaning
1	Norwegian Bokmål	språk	language
2	Middle Low German	sprake	—

Every word from Proto-Indo-European teḱ- →Every word from Proto-Germanic þegnaz →Every word from Old Norse þegn →