Where does “Polyak” come from?

Polyak (English) comes from Hungarian polyák, from Polish polak, from Polish pole, from Old Polish pole, from Proto-Slavic pȍľe, from Proto-Indo-European pleh₂- — flat.

Ancestry of “Polyak”, step by step

StepLanguageWordMeaning
1HungarianpolyákPolish; Pole
2PolishpolakPolish language
3Polishpolefield; outside; area
4Old Polishpolefield
5Proto-Slavicpȍľefield
6Proto-Indo-Europeanpleh₂-flat
Every word from Proto-Indo-European pleh₂-Every word from Proto-Slavic pȍľeEvery word from Old Polish pole