köken: From Middle High German ingeweide, from earlier geweide, a word restricted to High German. Predominantly attributed to hunter’s jargon as a derivation from Weide (“food, pasture”), as some of the guts are thrown to the dogs. Alternatively related to Weide (“willow”), then in the sense of “something wound up, convoluted”; compare Latin viscera (“entrails”).
aile: Eingeweidebruch
[Das Monster] beißt Dir in den Hals und trinkt Dein Blut. Ohne Blut bist Du bleich wie Kreide; dann frißt es Deine Eingeweide.
köken: The "intestine" and "core" senses are from Proto-Sino-Tibetan *wu (“belly; stomach; intestine; kidney”); cognate with Nuosu ꃶ (vu), Tangut 𗎨 (*wju², “intestines”) (STEDT). Luce 1981 also compares Old Chinese 腰 (OC *qew, “waist, kidney”). The other senses are grouped together with the "guts" sense by MED, though they probably should not be - that said, neither STEDT nor Luce 1981 mentions these…