<p><strong>Noun</strong></p><ul><li>a state in which progress is impossible, as in a dispute, produced by the counteraction of opposing forces; standstill; stalemate: The union and management reached a deadlock over fringe benefits.</li><li>Synonyms: draw, impasse, standoff.</li><li>deadbolt: a maximum-security cell for the solitary confinement of a prisoner.</li></ul><p><strong>Verb</strong></p><ul><li>(used with or without object) to bring or come to a deadlock.</li></ul>