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1.
"Umbriago, whom Durante calls "that lifelong chum," is partly a creation of Jimmy's far-fetching imagination and partly a figment of Italian folklore. The folklore Umbriago is a friendly, lusty, happy little man who is always the life of the party. But in Jimmy's comedy, Umbriago may assume many shapes—clarinetist, bank president, farmer—according to whatever mischief Durante is up to."
Umbriago! Wanna go with me to the Kasbar? A-cha-cha-cha-cha-cha-chaaa...
by zmin September 15, 2008
 
2.
In a team competition, when one team dominates the other.

Specifically in golf, when both players on a team make a birdie or better while playing a Scotch Game.
"I'm going to drop an umbriago on you whistle dicks when I roll this putt home"

After a tense, game winning play or toss, "UMBRIAGO!!!"
by TheBirdmanWhodunnit July 21, 2009