Merriam-Webster's Collegiate® Dictionary, 11th Edition
JUG
I. noun
Etymology: perhaps from Jug, nickname for Joan
Date: 1538
1. a small pitcher, b. a large deep usually earthenware or glass container with a narrow mouth and a handle, the contents of such a container ; jugful , jail , prison ,
II. transitive verb (jugged; jugging)
Date: 1747
to stew (as a hare) in an earthenware vessel, jail , imprison