1. A short pointed weapon with sharp edges.
2. Something that agonizes, torments, or wounds.
a. See obelisk.
b. A double dagger.
look daggers at
To glare at angrily or hatefully.
[Middle English daggere, alteration of Old French dague, from Old Provençal dague or Old Italian daga, both perhaps from Vulgar Latin *dāca (ēnsis), Dacian (knife), from feminine of Latin Dācus.]
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2020 by Houghton Mifflin Harcourt Publishing Company. 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.