jug band definition by Webster's New World
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio. Used by arrangement with John Wiley & Sons, Inc.
a kind of small string band or jazz band using simple instruments, as guitars, harmonicas, and kazoos, and makeshift ones, as washtubs or empty jugs
Origin: from the jug used to produce bass notes by blowing across the opening
jug band definition by American Heritage Dictionary
A group that uses unconventional or improvised instruments, such as jugs, kazoos, and washboards.