When Galen in the second century carried out autopsies, he found that the second portion of the small intestine was usually empty, and called this part of the gut the jejunum, meaning empty, dry. We have a few English words with the same root.
Wolpow, Edward R.
Word Ways: Vol. 17
, Article 9.
Available at: http://digitalcommons.butler.edu/wordways/vol17/iss1/9