Where does “topplykill” come from?

topplykill (Icelandic) comes from Icelandic lykill, from Old Norse lykill, from Old Norse lúka, from Proto-Germanic lūkaną, from Proto-Indo-European lewǵ- — to break, tear; to break, shatter.

Ancestry of “topplykill”, step by step

topplykill traces back through two separate lines of ancestry.

via Icelandic lykill

StepLanguageWordMeaning
1Icelandiclykilla key; a clef; a key; one of several small,...
2Old Norselykillkey
3Old Norselúkato shut; to end, bring to an end, finish,...
4Proto-Germaniclūkanąto close, to shut; Alternative form of *leukaną
5Proto-Indo-Europeanlewǵ-to break, tear; to break, shatter

via Icelandic toppur

StepLanguageWordMeaning
1Icelandictoppurtop; peak, summit; climax
2Old Norsetopprtuft of hair, forelock
3Proto-Germanictuppaztuft, plait; top, summit
4Proto-Indo-Europeandumb-tail, rod, staff, pole, penis; tail, rod, staff,...
Every word from Proto-Indo-European lewǵ-Every word from Proto-Germanic lūkanąEvery word from Old Norse lúka