The term 'site administrator' can be defined as a webmaster, or someone who is responsible for the maintenance and upkeep of a website. The crossword solution for this term is 'Webster, ' which refers to someone who is knowledgeable in the field of web development and design. A site administrator is responsible for ensuring that the website is running smoothly, making sure that all content is up-to-date, and troubleshooting any technical issues that may arise. They also have the ability to make changes to the website's design and layout, as well as add new features and functionality.