cook·ie also cook·y (kkē)
n. pl. cook·ies
1. A small, usually flat and crisp cake made from sweetened dough.
2. Slang A person, usually of a specified kind: a lawyer who was a tough cookie.
3. Computers A collection of information, usually including a username and the current date and time, stored on the local computer of a person using the World Wide Web, used chiefly by websites to identify users who have previously registered or visited the site.
[Dutch koekje, diminutive of koek, cake, from Middle Dutch koeke; akin to German Kuchen and Old Norse kaka, cake.]
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2018 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.