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Definition jailbreak in American English

jailbreak verb

[transitive] verb
/ˈdʒeɪlˌbreɪk/
1

to unlock the operating system of a cellphone or other device that uses iOS so that it can run software it is not normally authorized to use because of restrictions imposed by the manufacturer

Example

I once jailbroke my iPhone so I could customize it, but after a few months I went back to the standard OS as I preferred it.

Synonyms and related words
Definition jailbreak in American English