Where does “клас” come from?

клас (Serbo-Croatian) comes from Proto-Slavic kȏlsъ, from Proto-Indo-European kolH-so-.

клас (Serbo-Croatian): ear

Definitions

  1. ear

Ancestry of “клас”, step by step

StepLanguageWordMeaning
1Proto-Slavickȏlsъear (of grain)
2Proto-Indo-EuropeankolH-so-—
Every word from Proto-Indo-European kolH-so- →Every word from Proto-Slavic kȏlsъ →
клас — Etymology, Origin & Word History | Etymology Explorer