je·ju·num
noun/dʒɪˈdʒuːnəm/
/dʒɪˈdʒuːnəm/
(anatomy)- the second part of the small intestine
compare duodenum, ileum空肠 Word Originmid 16th cent.: from medieval Latin, neuter of jejunus ‘fasting’ (because it is usually found to be empty after death).