Proper noun

1. (in Greek mythology) either of two heroes of the Trojan war
2. A group of techniques for creating interactive web applications, in which applications can retrieve data from the server asynchronously in the background without interfering with the display and behavior of the existing page.
   • February 2005: Jesse James Garrett, Ajax: A New Approach to Web Applications

     An Ajax application eliminates the start-stop-start-stop nature of interaction on the Web by....

3. An ace and a jack as a starting hand in Texas hold 'em due to phonetic similarity