Macellum

A macellum (plural: macella) is an ancient Roman indoor market building that sold mostly provisions (especially fruits and vegetables). The building normally sat alongside the forum and basilica, providing a place in which a market could be held. Each macellum sold different kinds of produce, depending on local availability, but it was not uncommon to import these comestibles, especially at ports like Pompeii.

Source: https://en.wikipedia.org/wiki/Macellum