Worked on enhancing accessibility for the Definition Widget in the Khan/perseus repository, focusing on improving keyboard interactions and navigation for users relying on assistive technology. Implemented features allowing users to dismiss popovers with the Escape key and navigate through interactive elements using Tab and Shift+Tab, directly addressing usability for keyboard-only navigation. Utilized React for front end development, leveraging both JavaScript and TypeScript to ensure robust and maintainable code. This targeted update established a reusable pattern for keyboard navigation within widgets, laying groundwork for future accessibility improvements and aligning with broader accessibility initiatives across the Perseus codebase.