ni·hil ob·stat 
(nī′hĭl ŏbstät′, -stăt′, nē′-)
(nī′hĭl ŏbstät′, -stăt′, nē′-)n.
1. Roman Catholic Church An attestation by a church censor that a book contains nothing damaging to faith or morals.
2. Official approval, especially of an artistic work.
[Latin, nothing hinders : nihil, nothing + obstat, third person sing. present tense of obstāre, to hinder.]