bowels
plural noun
us/ˈbɑʊ·əlz,bɑʊlz/(alsobowel,us/ˈbɑʊ·əl,bɑʊl/)alongtubethrough whichfoodtravelswhile it is beingdigestedafterleavingthestomach;intestines
fig.The bowels of something are thedeepestpartsof it:
Prisoners weregenerallyconfinedto the bowels of theship.