Where does “уточить” come from?

уточить (Russian) comes from Russian точи́ть, from Proto-Slavic točiti, from Proto-Slavic tekti, from Proto-Balto-Slavic tektej, from Proto-Indo-European tekʷ- — to run, to flow.

Definitions

Ancestry of “уточить”, step by step

StepLanguageWordMeaning
1Russianточи́тьto shed; sharpen; to wear away
2Proto-Slavictočitito cause to flow, run
3Proto-Slavictektito run, to flow
4Proto-Balto-Slavictektej—
5Proto-Indo-Europeantekʷ-to run, to flow
Every word from Proto-Indo-European tekʷ- →Every word from Proto-Balto-Slavic tektej →Every word from Proto-Slavic tekti →