straightedge

A rigid flat rectangular bar, as of wood or metal, with a straight edge for testing or drawing straight lines.

Having a level, even edge.

Abstaining from alcohol, tobacco, and drugs.

A wooden board or metal strip, with an edge accurately planed, used in irrigation for laying out ditches in connection with a level or plumb-bob and in place of a surveyor’s level.

A bar having one edge, at least, as straight as possible, to be used as a fiducial line in drawing and testing straight lines.

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.

Living one’s life against/without the use of alcohol, smoking, and illegal drugs.

A tool which is flat, rectangular and commonly made of wood, metal or plastic and is used to draw, cut or check the straightness of straight lines.

hand tool consisting of a flat rigid rectangular bar (metal or wood) that can be used to draw straight lines (or test their straightness)