The singular word for spaghetti is spaghetto. It is an Italian word derived from the Italian verb "spaghettare", which means "to string".
The plural of spaghetto is spaghetti. The word is often used to refer to the long, thin pasta that is a staple of Italian cuisine. It is usually served with tomato sauce, cheese, or other sauces, and can be served with a variety of meats and vegetables.