Penne or ziti (5)
I believe the answer is:
pasta
'penne or ziti' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for pasta that I've seen before include "tagliatelle perhaps" , "Fusilli, tortelloni etc" , "Dish of dough made with durum wheat" , "Spaghetti, orzo etc" , "Tapas (anag)" .)