Where does “fruissier” come from?

fruissier (Old French) comes from Vulgar Latin frustio, from Latin frustum, from Proto-Italic frustom, from Proto-Indo-European bʰrus-tós, from Proto-Indo-European bʰrews- — to break.

Ancestry of “fruissier”, step by step

StepLanguageWordMeaning
1Vulgar Latinfrustio—
2Latinfrustuma piece, bit; crumb, morsel, scrap of food
3Proto-Italicfrustom—
4Proto-Indo-Europeanbʰrus-tós—
5Proto-Indo-Europeanbʰrews-to break
Every word from Proto-Indo-European bʰrews- →Every word from Proto-Indo-European bʰrus-tós →Every word from Proto-Italic frustom →