Where does “ruuvikoukku” come from?

ruuvikoukku (Finnish) comes from Finnish ruuvi, from Middle Low German schrūve, from Proto-Indo-European (s)ḱer- — dung, manure, filth; manure, dung, filth.

ruuvikoukku (Finnish): screw hook, screw-in hook

Definitions

screw hook, screw-in hook

Ancestry of “ruuvikoukku”, step by step

ruuvikoukku traces back through two separate lines of ancestry.

via Finnish ruuvi

Step	Language	Word	Meaning
1	Finnish	ruuvi	screw
2	Middle Low German	schrūve	screw machine
3	Proto-Indo-European	(s)ḱer-	dung, manure, filth; manure, dung, filth

via Finnish koukku

Step	Language	Word	Meaning
1	Finnish	koukku	hook; addiction; used in inessive, elative and...
2	Proto-Finnic	koukku	hook, hook-shaped tool

Every word from Proto-Indo-European (s)ḱer- →Every word from Middle Low German schrūve →Every word from Finnish ruuvi →