A rigid flat rectangular bar, as of wood or metal, with a straight edge for testing or drawing straight lines.
adj. also straight-edge (strātĕj′)
1. Having a level, even edge: a straightedge ruler; a straightedge razor blade.
2. Abstaining from alcohol, tobacco, and drugs.
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2022 by HarperCollins Publishers. All rights reserved.
Indo-European & Semitic Roots Appendices
Thousands of entries in the dictionary include etymologies that trace their origins back to reconstructed proto-languages. You can obtain more information about these forms in our online appendices:
The Indo-European appendix covers nearly half of the Indo-European roots that have left their mark on English words. A more complete treatment of Indo-European roots and the English words derived from them is available in our Dictionary of Indo-European Roots.