1 definition by Ex Omni

In electronics: to enable use of a consumer electronics product not intended by the manufacturer through the exploitation of software hacks.

Commonly used to refer to enabling a carrier-locked phone, such as the iPhone, to accept SIM cards from other carriers. Or a restricted platform to run unlicensed or homebrew software.
"If you don't want to pay for AT&T on your iPhone, you can just jailbreak it."
by Ex Omni July 23, 2008
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