favicon

noun

fav·i·con ˈfa-və-ˌkän

plural favicons

: a small icon associated with a particular website or page that is displayed in an Internet browser (as in the browser's address bar or in a list of favorites)

… as the world's most popular search engine tries out a new favicon, Craig Smith says the old branding rulebook is being rewritten. It's not the size that matters, it's how often you use it. So the thinking goes at Google, which has just revealed the design of its latest favicon—the tiny logo that shows any web user, on any web browser, anywhere in the world, precisely whose internet "real estate" they are currently residing upon.—