Where does “hlanca” come from?

hlanca (Frankish) comes from Proto-Germanic hlankaz, from Proto-Indo-European kleng- — to turn, bend; to bend, turn, wind, twist.

Ancestry of “hlanca”, step by step

Step	Language	Word	Meaning
1	Proto-Germanic	hlankaz	flexible; bendsome; slim; slender; sleek
2	Proto-Indo-European	kleng-	to turn, bend; to bend, turn, wind, twist

hlanca — Etymology, Origin & Word History | Etymology Explorer