Grotti
nafnorðkarlkyn
a, m. the mythical mill in Edda; whence Grotta-söngr, m. name of a poem; also in local names Grotti, a current near to Reykjavík; akin to Engl. grit, groats, cp. also Ivar Aasen s. v. grötte (the nave in a mill-stone); the tale of the enchanted mill grinding gold and salt etc. at the bottom of the sea is common to all Teutons (vide Edda), and survives in popular tales of Germany, Norway, and Iceland: the sea is called Skerja-grotti, Skerry-grinder, Edda (in a verse).