Definition of "unbar"

unbar

verb
third-person singular simple present unbars, present participle unbarring, simple past and past participle unbarred
1. (transitive) To unlock or unbolt a door that had been locked or bolted with a bar.
  Quotations
  Only Enid could dare him at such a time, and even she felt occasionally that sinking of the heart which the bravest of tamers may experience as he unbars the gate of the cage.
  1925 July – 1926 May, A[rthur] Conan Doyle, “(please specify the chapter number)”, in The Land of Mist (eBook no. 0601351h.html), Australia: Project Gutenberg Australia, published April 2019
2. (transitive) To remove an impediment that obstructs the passage of (someone or something).
3. (transitive) To remove a prohibition.