Definition of «one's jack»

The phrase "one's jack" is not a commonly used phrase and it's unclear what the intended meaning is. Could you please clarify or provide more context?

Phrases with «one's jack»

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Sentences with «one's jack»

I kinda dig this e-reader, it has a 3.5 mm headphone jack for headphones or a pair of wired speakers. (goodereader.com)
I have a funny thing that AV will try this but for the good of jack I hope not. (justarsenal.com)
Luckily, the bottom of the unit has a nice audio jack for headphones or external speakers. (digitaltrends.com)
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