Definition:

an oversize wine bottle holding about 16 times the volume of a normal bottle

Example:

"Are you preparing to serve wine to 96 guests? Then a Balthazar is just your ticket!" – Kathleen Rake, "Between the Vines" blog, July 13, 2011

About the Word:

One of the largest of all wine bottle sizes, the balthazar is named after a 6th century B.C.E. king of Babylon mentioned in the Bible: "Belshazzar the king made a great feast to a thousand of his lords, and drank wine before the thousand." (Daniel 5:1, King James Version)