Where does “topplock” come from?

topplock (Swedish) comes from Swedish topp, from Old Swedish topper, from Old Norse toppr, from Proto-Germanic tuppaz, from Proto-Indo-European dumb- — tail, rod, staff, pole, penis; tail, rod, staff,...

topplock (Swedish): cylinder head

Definitions

  1. cylinder head

Ancestry of “topplock”, step by step

topplock traces back through two separate lines of ancestry.

via Swedish topp

StepLanguageWordMeaning
1Swedishtopptop, peak; top; head
2Old Swedishtopper—
3Old Norsetopprtuft of hair, forelock
4Proto-Germanictuppaztuft, plait; top, summit
5Proto-Indo-Europeandumb-tail, rod, staff, pole, penis; tail, rod, staff,...

via Swedish lock

StepLanguageWordMeaning
1Swedishlocka lock of hair; a cover, a lid; popping
2Old Norseloklock, lid; weed, unwanted plant
3Proto-Germaniclūkanąto close, to shut; Alternative form of *leukaną
4Proto-Indo-Europeanlewǵ-to break, tear; to break, shatter
Every word from Proto-Indo-European dumb- →Every word from Proto-Germanic tuppaz →Every word from Old Norse toppr →