The Collaborative International Dictionary
Upbar
Upbar \Up*bar"\, v. t.
To fasten with a bar. [R.]
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.