Synonyms and related words :
abatis, abdomen, anus, appendix, baloney, bilge, blah, blah-blah, blind gut, bop, bosh, bowels, brain, brains, bull, bullshit, bunk, bunkum, cecum, chitterlings, cockscomb, colon, crap, duodenum, endocardium, entrails, flapdoodle, foregut, gas, giblets, gizzard, guff, gup, guts, haslet, heart, hindgut, hogwash, hokum, hooey, hot air, innards, inner mechanism, insides, internals, intestine, inwards, jejunum, kidney, kidneys, kishkes, large intestine, liver, liver and lights, lung, malarkey, marrow, midgut, moonshine, perineum, piffle, poppycock, pump, pylorus, rectum, rot, scat, shit, small intestine, spleen, stomach, sweetbread, ticker, tommyrot, tongue, tripes, vermiform appendix, viscera, vitals, wind, works