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"intestine" is also used as a crossword clue. If that's what you saw, the answer is often gut (3 letters).
Definitions
the part of the alimentary canal between the stomach and the anus
Word origin
From Latin intestīnum, neuter of intestīnus (“internal”), as Etymology 2, below.
Used in a sentence
“Hoping here to end / Intestine war in heaven, the arch foe subdued.”
“It being true that now after fiue yeeres intestine warre with the reuengefull implacable Indians, a firme peace (not againe easily to be broken) hath bin lately concluded[…].”
“[W]riters ſhould ceaſe from inteſtine hoſtilities; and, inſtead of ſacrificing each other to malice and contempt, endeavour to avert perſecution from the meaneſt of their fraternity.”
Source: Wiktionary, CC BY-SA 4.0
Used as a crossword answer1 curated clues
01“Gut tube”9 letters
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