Gut comes from the Old English gūta, dating back to the 9th century, originally meaning "the inner part" or "intestine."
The digestive tract or the internal organs of an animal or human.
The word 'gut' originates from the Old English 'gutt', which referred to the innards or entrails of an animal. It is derived from Proto-Germanic *gutō, which also meant 'guts' or 'internal organs'. The term has been used in English since at least the 14th century. Key roots: guttas (Old English: "gut, entrails (no established PIE etymology; possibly related to OE gēotan to pour)").