The Modern English word "fox" is Old English, and comes from the Proto-Germanic word fukh -- compare German Fuchs, Gothic fauho, Old Norse foa and Dutch vos. It corresponds to the Proto-Indo-European word puk- meaning "tail of it" (compare Sanskrit puccha, also "tail"). The bushy tail is also the source of the word for fox in Welsh: llwynog, from llwyn, "bush, and grove". Portuguese: raposa, from rabo, "tail" and Ojibwa: waagosh, from waa, which refers to the up and down "bounce" or flickering of an animal or its tail. Male foxes are known as dogs or reynards, females as vixens, and young as kits, pups or cubs. A group of foxes is a "skulk", "leash", "troop" or "earth".