noun
General Slang
Double jack
· noun · construction
A heavy short-handled sledge swung two-handed.
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Definitions
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The bigger brother of the single jack — usually 6 to 10 pounds on a short handle, swung with both hands. Comes from mining, where the 'double jack' team had one man holding the steel and another swinging. Today it's the go-to for driving stakes, busting concrete, and any masonry job where a full sledge is overkill but a hand hammer won't cut it.
“The single jack wasn't doing it — I had to come back with the double jack.”
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Double jack In A Sentence
The single jack wasn't doing it — I had to come back with the double jack.
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