Where does “жерело” come from?

жерело (Old East Slavic) comes from Proto-Slavic žerdlo, from Proto-Balto-Slavic gerʔtló, from Proto-Indo-European gʷerh₃-tlóm, from Proto-Indo-European gʷerh₃- — to swallow, devour, eat.

Ancestry of “жерело”, step by step

StepLanguageWordMeaning
1Proto-Slavicžerdlothroat, inlet; mouth, gorge; water spring
2Proto-Balto-Slavicgerʔtló
3Proto-Indo-Europeangʷerh₃-tlóm
4Proto-Indo-Europeangʷerh₃-to swallow, devour, eat

Words derived from “жерело

Every word from Proto-Indo-European gʷerh₃-Every word from Proto-Indo-European gʷerh₃-tlómEvery word from Proto-Balto-Slavic gerʔtló