 a calzone), though "calzoni" and "panzerotti" are often mistaken for each other.The noun "panzerotto" comes from a diminutive of "panza", a regional variation of Italian "pancia" ("belly, tummy"), referring to the distinctive swelling of the pastry which resembles a belly bloating.Albeit etymologically related, the word () refers to a totally different dish from panzerotti, denoting a kind of ravioli which is typical of Genoa.