Where does “thrāt” come from?

thrāt (Old High German) comes from Proto-Germanic þrēduz, from Proto-Indo-European treh₁-tu-, from Proto-Indo-European terh₁- — to rub, turn; to drill, pierce.

Ancestry of “thrāt”, step by step

StepLanguageWordMeaning
1Proto-Germanicþrēduzthread, twisted fibre
2Proto-Indo-Europeantreh₁-tu-—
3Proto-Indo-Europeanterh₁-to rub, turn; to drill, pierce
Every word from Proto-Indo-European terh₁- →Every word from Proto-Indo-European treh₁-tu- →Every word from Proto-Germanic þrēduz →