a piece or strip of wood, etc. having a perfectly straight edge used in drawing straight lines, testing plane surfaces, etc.
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: a straightedge ruler; a straightedge razor blade.
- Abstaining from alcohol, tobacco, and drugs.
(comparative more straightedge, superlative most straightedge)
- Living one's life against/without the use of alcohol, smoking, and illegal drugs.