sacred cowEnglishOxford New American Dictionarysacred cow /ˈsākrid ˌkou, ˈseɪkrɪd ˌkaʊ / ▸ noun an idea, custom, or institution held, especially unreasonably, to be above criticism (with reference to the Hindus' respect for the cow as a sacred animal): the sacred cow of monetarism the British diet remains a sacred cow.
EnglishOxford New American Dictionary
