rynnäkkövaunu (Finnish) comes from Finnish vaunu, from Old Swedish vaghn, from Old Norse vagn, from Proto-Germanic wagnaz, from Proto-Indo-European woǵʰnos, from Proto-Indo-European weǵʰ- — to bring; to transport.
Ancestry of “rynnäkkövaunu”, step by step
rynnäkkövaunu traces back through two separate lines of ancestry.