Hover Lookup is a lightweight, easy-to-use, and privacy-first extension for Chrome. This simple and intuitive extension allows you to quickly look up the definition of a word while you hover over its corresponding text. When you press the Ctrl + Shift keys, the definition is shown in an internal browser and can be closed if you don't need it.

The idea is simple: While you're typing in a link, simply hover over the link to see the definition of the word you want to look up. Press Ctrl + Shift when you're ready to see the definition. If you press Ctrl + Shift again, you'll be back to the normal link.

The tool also allows you to disable or enable the Ctrl + Shift functionality. In other words, you can configure it to show definitions for any given link when you hover over it, or just when you press Ctrl + Shift.