スパゲッティ (supagetti) means “spaghetti”

More examples

夕食にスパゲッティを作ります。yū shoku ni su pa ge tti o tsuku ri ma su

I make spaghetti for dinner.

Names long, thin pasta strands that are eaten as food, with the pasta itself at the center rather than any particular sauce.

小麦粉などから作る、細長いひも状のパスタ。ko mugi kona na do ka ra tsuku ru hoso naga i hi mo jō no pa su ta

This noun is borrowed from Italian spaghetti, the plural form of spaghetto, a diminutive of spago, meaning "string."

In English, spaghetti is usually an uncountable noun, so it commonly appears without a plural ending when it means the pasta as food.