Translation of "cookie" into English

On the World Wide Web, a block of data that a Web server stores on a client system. When a user returns to the same Web site, the browser sends a copy of the cookie back to the server. Cookies are used to identify users, to instruct the server to send a customized version of the requested Web page, to submit account information for the user, and for other administrative purposes. [..]

packet of information sent by a server to a World Wide Web browser and then returned by the browser each time it accesses that server