armband (Icelandic) comes from Icelandic armur, from Old Norse armr, from Proto-Germanic armaz, from Proto-Indo-European h₂ermos, from Proto-Indo-European h₂er- — to fit, to fix, to put together.
armband (Icelandic): bracelet
Definitions
bracelet
Ancestry of “armband”, step by step
armband traces back through two separate lines of ancestry.