In web browsers it is called 'address bar' which contains the box where to type the URLs to visit, in addition to related buttons and information. Today it is combined with the 'search bar' in most browsers.
ADDRESS BAR grammatical error due to number mismatch. This is the STEERING BAR that provides the turn control of a vehicle. The plural is ADDRESS BARS . Address bar does not make logical sense as address implies here all mechanically possible senses to execute .