intestines (n.)youdaoicibaDictYouDict[intestines 词源字典]
"bowels," 1590s, from Latin intestina, neuter plural of intestinus (adj.) "internal, inward, intestine," from intus "within, on the inside" (see ento-). Compare Sanskrit antastyam, Greek entosthia "bowels." The Old English word was hropp, literally "rope."[intestines etymology, intestines origin, 英语词源]