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corrugated fastener[′kär·ə‚gād·əd ′fas·nər]
A thin corrugated strip of steel that can be hammered into a wood joint to fasten it.
corrugated fastener, joint fastener
A steel fastening device used to join corner pieces in rough carpentry; one side of a small corrugated strip is sharpened so that it may be driven into the two wood pieces to be joined; used only where appearance is not important.