Simple Definition of straightedge
: a piece of wood, metal, plastic, etc., with a straight edge that you use to make sure something (such as a line or surface) is straight or to make straight lines or cuts
Full Definition of straightedge
: a bar or piece of material (as of wood, metal, or plastic) with a straight edge for testing straight lines and surfaces or for cutting along or drawing straight lines
First Known Use of straightedge
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