Ok, so I searched the Sopranos cookbook on Amazon and found something hilarious in a guide on "Italian-American Food Speak." Giambotta is defined as a vegetable stew, also spelled "ciambotta" or pronounced giambott' (!!). It is slang for a "big mix-up" or a "mess."
When I showed this definition to my mother, she replied, "That's what Grandma said! She said the name couldn't be right. In Italian it meant a pile of crap."
Amanda: you'll be interested to know that in this same guide your beloved pasta fagoli is listed as fazool.
I'm pretty sure I'm ordering the Sopranos Cookbook soon.