v. t. [ 1st pref. un- + barrel. ] To remove or release from a barrel or barrels. [ 1913 Webster ]
v. t. [ 1st pref. un- + barricade. ] To unbolt; to unbar; to open. [ 1913 Webster ]
You shall not unbarricade the door. J. Webster (1623). [ 1913 Webster ]
a. Not obstructed by barricades; open;