<p><strong>Noun:</strong></p><ul><li>an escape from prison, especially by forcible means</li><li>an instance of gaining access to the operating system of a smartphone, tablet, etc., especially one manufactured by Apple</li><li>a software program or piece of hardware used to accomplish this: You'll need a jailbreak to run unauthorized apps</li><li>an instance of circumventing restrictions on access to any computer system or digital content</li></ul><p><strong>Verb (used with object):</strong></p><ul><li>jailbroke</li><li>jailbroken</li><li>jailbreaking</li><li>to gain access to the operating system of (a smartphone, tablet, etc., especially an Apple device), usually in order to run modified or unauthorized software</li></ul><p><strong>Verb (used without object):</strong></p><ul><li>jailbroke</li><li>jailbroken</li><li>jailbreaking</li><li>to engage in this practice</li></ul>