Where does “þrahilaz” come from?

þrahilaz (Proto-Germanic) comes from Proto-Indo-European tregʰ-, from Proto-Indo-European dʰregʰ- — to run.

Ancestry of “þrahilaz”, step by step

StepLanguageWordMeaning
1Proto-Indo-Europeantregʰ-to drag, pull?; to run, walk
2Proto-Indo-Europeandʰregʰ-to run
Every word from Proto-Indo-European dʰregʰ- →Every word from Proto-Indo-European tregʰ- →