the phrase used by a Roman Catholic censor to declare publication inoffensive to faith or morals
Word origin
Latin, literally: nothing hinders
nihil obstat in American English
(ˌnihɪl ˈɔbstɑt)
Latin
1. Roman CatholicChurch
a printed phrase, followed by the name of an officially appointed censor, indicating that the publication carrying the phrase has been examined and judged free of doctrinal or moral error