μετρητής G3355
metrētḗs · met-ray-tace' · Noun Masculine
from μετρέω; a measurer, i.e. (specially), a certain standard measure of capacity for liquids:--firkin.
1 Occurrence in the King James Bible
John 2:6And there were set there six waterpots of stone, after the manner of the purifying of the Jews, containing two or three firkins apiece.