# jailbreak

/ˈdʒeɪɫˌbɹeɪk/ (US) · /dʒˈeɪlbɹeɪk/ (UK) · CEFR C1 · Noun

Source: https://englishreference.com/word/jailbreak
Updated: 2026-05-11

## Definition

the act of removing software restrictions on a device like a phone or tablet. This lets you install apps or change settings that the manufacturer usually blocks.

For teachers: the process of removing software restrictions imposed by the manufacturer on a device's operating system. This typically involves exploiting security vulnerabilities to gain root access, allowing the installation of unauthorized software.

## Examples

- He performed a jailbreak on his old phone to install custom themes.
- After the latest jailbreak was released, many users modified their tablets to run third-party applications not found in the official store.
- While a jailbreak offers greater customization and control over the hardware, it often voids the manufacturer's warranty and may leave the device vulnerable to security threats.

## Usage notes

- Often used as a compound noun in computing; can also function as a verb.

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