Where does “flass” come from?

flass (Icelandic) comes from English Flash, from Middle English flasshen.

flass (Icelandic): camera flash

Definitions

  1. camera flash

Ancestry of “flass”, step by step

StepLanguageWordMeaning
1EnglishFlashA multimedia platform, most often used for adding animation and interactivity to webpages
2Middle Englishflasshen—
Every word from Middle English flasshen →Every word from English Flash →
flass — Etymology, Origin & Word History | Etymology Explorer