Define It (find the definition of any word)

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "manifest_version": 3,
  "name": "Define It (find the definition of any word)",
  "version": "1.0",
  "description": "Search definition of words by right-clicking on them.",
  "permissions": [
    "contextMenus",
    "activeTab",
    "scripting"
  ],
  "background": {
    "service_worker": "background.js"
  },
  "icons": {
    "16": "define_it_16.png",
    "48": "define_it.png",
    "128": "define_it_128.png"
  },
  "action": {
    "default_popup": "define_it.html"
  }
}