Bible Dictionaries
Straightedge

Webster's Dictionary

(n.) A board, or piece of wood or metal, having one edge perfectly straight, - used to ascertain whether a line is straight or a surface even, and for drawing straight lines.

Bibliography Information
Webster, Noah. Entry for 'Straightedge'. Noah Webster's American Dictionary. https://www.studylight.org/​dictionaries/​eng/​web/​s/straightedge.html. 1828.