Where does “lukkomutteri” come from?

lukkomutteri (Finnish) comes from Finnish mutteri, from Swedish mutter, from German mutter, from Middle High German muoter, from Old High German muoter, from Old Frisian mōder, from Proto-Germanic mōdēr, from Proto-Indo-European méh₂tēr — mother.

lukkomutteri (Finnish): lock nut

Definitions

lock nut

Ancestry of “lukkomutteri”, step by step

lukkomutteri traces back through two separate lines of ancestry.

via Finnish mutteri

Step	Language	Word	Meaning
1	Finnish	mutteri	nut; nob, knob
2	Swedish	mutter	a nut; mutter; obscure utterance
3	German	mutter	mother
4	Middle High German	muoter	mother
5	Old High German	muoter	mother
6	Old Frisian	mōder	—
7	Proto-Germanic	mōdēr	mother
8	Proto-Indo-European	méh₂tēr	mother

via Finnish lukko

Step	Language	Word	Meaning
1	Finnish	lukko	lock; bolt; clasp
2	Proto-Germanic	lukǭ	lock, clasp, shutter, opening
3	Proto-Indo-European	lewg-	to bend

Every word from Proto-Indo-European méh₂tēr →Every word from Proto-Germanic mōdēr →Every word from Old Frisian mōder →