Where does “gramo” come from?

gramo (Old High German) comes from Proto-Germanic gramô, from Proto-Indo-European gʰrem-, from Proto-Indo-European gʰer- — to rub; to stroke; to grind.

Ancestry of “gramo”, step by step

StepLanguageWordMeaning
1Proto-Germanicgramôanger, wrath; one who is angry, fiend, enemy
2Proto-Indo-Europeangʰrem-to be angry; to sound, bellow, growl, roar, be...
3Proto-Indo-Europeangʰer-to rub; to stroke; to grind
Every word from Proto-Indo-European gʰer-Every word from Proto-Indo-European gʰrem-Every word from Proto-Germanic gramô