bowelsplural noun
us/ˈbɑʊ·əlz, bɑʊlz/also bowel, /ˈbɑʊ·əl, bɑʊl/a long tube through which food travels while it is being digested after leaving the stomach; intestines
fig. The bowels of something are the deepest parts of it:
Prisoners were generally confined to the bowels of the ship.