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pump drill

noun
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Definition of pump drill

: a primitive drill in which the shaft is revolved by working up and down a bow or bar carrying a cord attached at the center to the upper end of the shaft

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“Pump drill.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/pump%20drill. Accessed 22 Jan. 2021.

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