Where does “сосна” come from?

сосна (Old East Slavic) comes from Proto-Slavic sosna, from Proto-Indo-European ḱesn-.

Ancestry of “сосна”, step by step

StepLanguageWordMeaning
1Proto-Slavicsosnapine tree
2Proto-Indo-Europeanḱesn-

Words derived from “сосна

Every word from Proto-Indo-European ḱesn-Every word from Proto-Slavic sosna