Where does “koka” come from?

koka (Old Norse) comes from Proto-Germanic kukōną, from Proto-Germanic kukaz, from Latin coquus, from Latin coquō, from English Cook, from Middle English cook, from Old English cōc, from Proto-West Germanic kokk — to bend, arch.

Ancestry of “koka”, step by step

StepLanguageWordMeaning
1Proto-Germanickukōnąto cook
2Proto-Germanickukazcook
3LatincoquusA cook; person who makes food
4Latincoquōto cook; prepare food
5EnglishCookA placename
6Middle Englishcookcook, chef, restauranteur; nourisher, nourishment
7Old Englishcōca cook
8Proto-West Germanickokkcock, rooster, chicken
9Proto-Germanickukkazcock, rooster, chicken
10Proto-Indo-Europeangēw-to bend, arch
Every word from Proto-Indo-European gēw-Every word from Proto-Germanic kukkazEvery word from Proto-West Germanic kokk