the.com/large intestine

means The final, wider stretch of the digestive tract where water and salts get reabsorbed from digested food and the leftover waste is compacted into stool before it exits the body.

from 'Intestine' traces back to Latin intestinus, meaning 'internal' or 'inward,' from intus ('within') — the organ named simply for being tucked inside the body. 'Large' is just the plain English word marking it out from its narrower, longer neighbor, the small intestine; the two aren't named for length but for width, since the large intestine has the wider diameter even though it's the shorter of the pair.