Where does “mroczak” come from?

mroczak (Polish) comes from Polish Mrok, from Proto-Slavic morkъ, from Proto-Balto-Slavic *markas, from Proto-Indo-European mergʷ- — dark, coloured; to flicker; to darken; to be dark.

mroczak (Polish): any bat of the genus Vespertilio

Definitions

  1. any bat of the genus Vespertilio

Ancestry of “mroczak”, step by step

StepLanguageWordMeaning
1PolishMrokdarkness
2Proto-Slavicmorkъdarkness
3Proto-Balto-Slavic*markas—
4Proto-Indo-Europeanmergʷ-dark, coloured; to flicker; to darken; to be dark
Every word from Proto-Indo-European mergʷ- →Every word from Proto-Balto-Slavic *markas →Every word from Proto-Slavic morkъ →