In food - a piece or gristle or connective tissue that you don't want to eat - or any other part of the food that you want to spit out because it's texture is unpleasant.
I couldn't eat all of the roast beef because it had too many wurgids.
When a ferret wants to strech,it does this: It willflip on its back and pull it's paws over its face behind its ears, afterwords it will put its hands on to floor and use them to propell itself around in a backwards circle wile kicking from side to side making a wormlike motion. My brother and I have dubbed this behavior wurgling.
The sleepy ferret wurgled from side to side to start a new day.