This is the 3390th most frequent German word.
hubert
"Hubert" is not a German word; it is a German male given name.
Hubert is used as a proper noun, a personal name here.
Hubert hat heute einen Kuchen gebacken.
Hubert baked a cake today.
Hubert is used metaphorically to refer to a component, probably a hub, in a machine.
Die hochmoderne Maschine hatte einen neuartigen Hubert.
The advanced machine had a novel hub.
Hubert is used again as a proper noun, depicting someone's name who participated in the card game.