anelloni

noun

1. A type of pasta similar to rigatoni but with ridges on the inside.“The pièce de résistance, though, is a dried tubular pasta called anelloni, a fashion-forward shape that dares to wear its sauce-clinging ridges on the inside of the loop instead of on the outside”
2. A type of pasta developed to investigate ring-shaped polymers.“So we decided to create our own "ring spaghetti" — or "anelloni" as we've decided to call it (anello in Italian meaning "ring").”