Where does “flak” come from?

flak (Icelandic) comes from German Flach, from Middle High German vlach, from Old High German flah, from Proto-West Germanic *flak, from Proto-Germanic flakaz, from Proto-Indo-European pl̥keh — flat surface.

flak (Icelandic): wreck; filet, fillet

Definitions

  1. wreck; filet, fillet

Ancestry of “flak”, step by step

StepLanguageWordMeaning
1GermanFlachshallow wide and not deep
2Middle High Germanvlach—
3Old High Germanflahflat, smooth
4Proto-West Germanic*flak—
5Proto-Germanicflakazflat
6Proto-Indo-Europeanpl̥kehflat surface

Words derived from “flak”

Every word from Proto-Indo-European pl̥keh →Every word from Proto-Germanic flakaz →Every word from Proto-West Germanic *flak →