Cookie (noun)

1. A small, flat, sweet baked good, often with chocolate chips or other ingredients.
2. A small text file placed on a user's computer by a web server, used to identify the user or track their access to the site.
3. A small, crisp, sweet cake, typically round, flat, and made with butter and flour.

Origin:

From dutch koekje, diminutive of koek ("cak.e")

Examples:

1. She baked a batch of cookies.
2. The website uses cookies to track user preferences.
3. The cookie jar was empty.
4. I like my cookies with chocolate chips.
5. The cookies were a perfect addition to the ice cream.