the internal parts of the trunk of an animal body.
2.
the intestines.
3.
the internal parts of anything: the entrails of a machine.
Origin: 1250–1300;Middle Englishentrailles < Anglo-French,Middle French < Vulgar Latin*interālia (compare early Medieval Latinintrālia), alteration, by suffix change (see -al1), of Latininterānea guts, neuter plural of interāneus; see inter-,-an, -eous
c.1300, from O.Fr. entrailles, from L.L. intralia "inward parts, intestines" (8c.), from L. interanea, neut. pl. of interaneus "internal," from inter "between, among."