šlem (Serbo-Croatian) comes from German Schleim, from Middle High German slīm, from Old High German slimb, from Proto-West Germanic *slimb, from Proto-Germanic slimbaz, from Proto-Indo-European (s)lemb- — to droop; sag; hang loosely.
šlem (Serbo-Croatian): helmet
Definitions
helmet
Ancestry of “šlem”, step by step
šlem traces back through two separate lines of ancestry.