ка́шель • (kášelʹ) m inan (genitive ка́шля, nominative plural ка́шли, genitive plural ка́шлей)
From Proto-Slavic *kaš(ь)ljь (“cough”), from Proto-Balto-Slavic *kaʔs(u)lio-, from Proto-Indo-European *kʷeh₂s-.