Oxford Dictionary English fail-safe adjectiveadjective BrE BrE//ˈfeɪl seɪf// ; NAmE NAmE//ˈfeɪl seɪf// [usually before noun] Add to my wordlistjump to other results(of machinery or equipment) designed to stop working if anything goes wrong a fail-safe device/mechanism/systemSee fail-safe in the Oxford Advanced American DictionaryCheck pronunciation: fail-safe oxfordlearnersdictionaries.com
