Is 'fettuccine' an Italian word

Yes, the Word 'fettuccine' is Italian. It refers to the Italian food that takes the form of ribbon shaped spaghetti or noodles. It's a feminine noun whose definite article is 'la'['the'], and whose indefinite article is 'una' ['a, one']. It's formed from the feminine noun 'fettuccia' and the diminutive suffix '-ine'. So it literally means 'little ribbon, little tape, very small slice'. It's pronounced 'feht-tooch-CHEE-nee'.