Definition: The phrase "the file .travis.nginx.conf" refers to a configuration file for a server that hosts Travis CI, a CI/CD toolchain used by software development teams. This file contains settings specific to the type of project (e.g., web development, testing) and tools being run. The term 'nginx' typically refers to the web server implemented by NGINX, one of the most popular open-source HTTP servers for web applications. The full definition might sound like this: "nginx configuration file (.travis.nginx.conf)" or "configuration files in .travis.nginx.conf file" and it's often used when a project uses multiple services that are dependent on nginx (like development, testing, and deployment).