Where does “trinca” come from?

trinca (Galician) comes from Old French strenc, from Frankish strangi, from Proto-Germanic strangiz, from Proto-Indo-European strengʰ-, from Proto-Indo-European ster- — sterile, infertile.

trinca (Galician): string

Definitions

string

Ancestry of “trinca”, step by step

Step	Language	Word	Meaning
1	Old French	strenc	string, cord, rope
2	Frankish	strangi	string
3	Proto-Germanic	strangiz	string
4	Proto-Indo-European	strengʰ-	to twist; rope, cord
5	Proto-Indo-European	ster-	sterile, infertile

Every word from Proto-Indo-European ster- →Every word from Proto-Indo-European strengʰ- →Every word from Proto-Germanic strangiz →