offalyoudaoicibaDictYouDict[offal 词源字典]
offal: [14] Etymologically, offal is simply material that has ‘fallen off’. English borrowed the word from Middle Dutch afval, a compound formed from af ‘off’ and vallen ‘fall’ which denoted both the ‘extremities of animals cut off by the butcher, such as feet, tail, etc’ and ‘shavings, peelings, or general refuse’. English originally took it over in the latter sense, but by the 15th century offal was being used for ‘animals’ entrails’.
=> fall, off[offal etymology, offal origin, 英语词源]
offal (n.)youdaoicibaDictYouDict
late 14c., "waste parts, refuse," from off + fall (v.); the notion being that which "falls off" the butcher's block; perhaps a translation of Middle Dutch afval.