Cotyla

In classical antiquity, the cotyla or cotyle (from Ancient Greek κοτύλη (kotúlē), 'cup, bowl') was a measure of capacity among the Greeks and Romans: by the latter it was also called hemina; by the former, τρυβλίον and ἡμίνα or ἡμίμνα.

A vessel or horn, of a cubic or cylindrical shape, and of the capacity of a cotyla, was divided into twelve equal parts by lines cut on its side.

The whole vessel was called litra, and each of the parts an ounce (uncia).

This measure held nine ounces (by weight) of oil, so that the ratio of the weight of the oil to the number of ounces it occupied in the measure would be 9:12 or 3:4.

[3] The name is also given to a type of ancient Greek vase broadly similar in shape to a skyphos but more closely resembling a kantharos.