Patera

In the material culture of classical antiquity, a patera (Latin pronunciation: [ˈpatɛra]) or phiale (Ancient Greek: φιάλη [pʰi.á.lɛː])[2] is a shallow ceramic or metal libation bowl.

It often has a bulbous indentation (omphalos, "belly button") in the center underside to facilitate holding it, in which case it is sometimes called a mesomphalic phiale.

Although the two terms may be used interchangeably, particularly in the context of Etruscan culture, phiale is more common in reference to Greek forms, and patera in Roman settings.

Libation was a central and vital aspect of ancient Greek religion, and one of the simplest and most common forms of religious practice.

[7] The form of libation called spondē is typically the ritualized pouring of wine from a jug or bowl held in the hand.