Noun
tubular passage of mucous membrane and muscle extending about 8.3 meters from mouth to anus; functions in digestion and elimination
Source: WordNetBut they were doughnuts of darkness. Evil, damned doughnuts, tainted by the spawn of darkness . . .. . . which could obviously be redeemed only by passing through the fiery, cleansing inferno of a wizardly digestive tract. Jim Butcher
Life is better when your sinuses are clean, when your arteries are clean, and when your digestive tract is clean. James Altucher
Economists have focused too much on the economy's circulatory system and have neglected to study its digestive tract. Throughput growth means pushing more of the same food through an ever larger digestive tract; development means eating better food and digesting it more thoroughly. Herman E. Daly