jackbit

jackbit

[′jak‚bit]
(design engineering)
A drilling bit used to provide the cutting end in rock drilling; the bit is detachable and either screws on or is taper-fitted to a length of drill steel. Also known as ripbit.
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References in periodicals archive ?
The locally-born mum has shared a family favourite recipe with Jackbit (slang for food), a cookbook created to coincide with Wigan's very own Food & Drink Festival, which starts tomorrow.
Although the title is a tongue-in-cheek nod to Wigans lang for food, Jackbit is a special edition cook book that will celebrate Wigan produce and recipes.