Where does “remmi” come from?

remmi (Finnish) comes from Swedish rem, from Old Norse reim, from Middle Low German rême, from Old Saxon reomo, from Proto-West Germanic reumō, from Proto-Germanic reumô, from Proto-Indo-European rew- — to roar, growl, grumble; to roar; growl; grumble;...

remmi (Finnish): leash; strap; group of people; gang, lot