1. A seal, especially one used officially to mark documents.
2. The impression made with such a seal.
tr.v. sig·net·ed, sig·net·ing, sig·nets
To mark or endorse with a signet.
[Middle English, from Old French, diminutive of signe, sign; see SIGN.]
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.