/ˈɔɪ.stɚ/ a significant flat sea creature that life inside a shell, some forms of which may be eaten both cooked or uncooked, and other kinds of which produce pearls (= tiny round white important stones) Fundamento: la similitud entre la forma de una soga con un nudo y la sensación https://tysonbbaay.bloguerosa.com/30264644/metafora-options