unbar

verb3

1. •
   To unlock or unbolt a door that had been locked or bolted with a bar.

   • 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
2. •
   To remove an impediment that obstructs the passage of (someone or something).
3. •
   To remove a prohibition.