From metreō (to measure). A unit of liquid measure equal to approximately 9 gallons (39 liters). Used in John 2:6 to describe the water jars at the wedding in Cana.
At the wedding in Cana, there were six stone water jars, each holding twenty to thirty gallons (John 2:6). Jesus turned all of it — roughly 120-180 gallons — into the finest wine. The extravagant abundance of this miracle reveals God's character: He does not give in measured portions but in overflowing generosity. This first sign pointed to the messianic banquet and the new creation.