Where does “perlau” come from?

perlau (Welsh) comes from Welsh perl, from Middle Welsh perl, from Middle English perle, from Old French perle, from Medieval Latin perla, from Latin perna, from Proto-Italic persnā, from Proto-Indo-European tpḗrsneh₂ — to kick.

Ancestry of “perlau”, step by step

StepLanguageWordMeaning
1Welshperlpearl
2Middle Welshperl
3Middle EnglishperleA pearl; Any round object, especially when shiny;...
4Old Frenchperle
5Medieval Latinperla
6LatinpernaA haunch or ham together with the leg, gammon; A...
7Proto-Italicpersnā
8Proto-Indo-Europeantpḗrsneh₂heel, upper thigh
9Proto-Indo-EuropeansperH-to kick
Every word from Proto-Indo-European sperH-Every word from Proto-Indo-European tpḗrsneh₂Every word from Proto-Italic persnā