un·bolt /ˌʌnˈbolt/
(vt.)拔去門閂,打開
Un·bolt, v. i. To explain or unfold a matter; to make a revelation. [Obs.] “I will unbolt to you.”
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Un·bolt v. t. To remove a bolt from; to unfasten; to unbar; to open. “He shall unbolt the gates.”
unbolt
v : undo the bolt of; "unbolt the door" [ant: bolt]