- plug and feathers
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an apparatus for splitting stone, consisting of two tapered bars (feathers), inserted into a hole drilled into the stone, between which a narrow wedge (plug) is hammered to spread them.[1835-45]
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Universalium. 2010.
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Universalium. 2010.
plug and feathers — an apparatus for splitting stone, consisting of two tapered bars (feathers), inserted into a hole drilled into the stone, between which a narrow wedge (plug) is hammered to spread them. [1835 45] … Useful english dictionary
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