unbar

from WordNet (r) 3.0 (2006)
unbar
    v 1: remove a bar from (a door) [ant: {bar}]
    
from The Collaborative International Dictionary of English v.0.48
Unbar \Un*bar"\, v. t. [1st pref. un- + bar.]
   To remove a bar or bars from; to unbolt; to open; as, to
   unbar a gate. --Heber.
   [1913 Webster]
    

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