entrails: [13] Entrails means literally just ‘insides’ – and indeed there is an unbroken semantic undercurrent to the word from earliest times to the present day signifying exactly that (as in ‘entrails of the earth’). It comes ultimately from the Latin adjective interāneus ‘internal’, a derivative of the adverb and preposition inter ‘inside, among’. Its neuter plural form interānea came to be used as a noun, and at some point underwent a metamorphosis to medieval Latin intrālia ‘inner parts, intestines’. English acquired the word via Old French entrailles. [entrails etymology, entrails origin, 英语词源]