a Scottish dish made of the lungs, heart, etc. of a sheep or calf, mixed with suet, seasoning, and oatmeal and boiled in the animal's stomach
See haggis in American Heritage Dictionary 4
(hăgˈĭs)
noun
A Scottish dish consisting of a mixture of the minced heart, lungs, and liver of a sheep or calf mixed with suet, onions, oatmeal, and seasonings and boiled in the stomach of the slaughtered animal.