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The Collaborative International Dictionary
Upbar

Upbar \Up*bar"\, v. t.

  1. To fasten with a bar. [R.]

  2. To remove the bar or bards of, as a gate; to under. [Obs.]
    --Spenser.

Wiktionary
upbar

vb. 1 (context transitive rare English) To fasten with a bar. 2 (context transitive obsolete English) To remove the bar or bards of, as a gate; to unbar.