Geolocation – in relation to geo applications (e.g. a simple web map) – usually means the action that by some measurements or data (IP address, Wireless LAN access points, mobile phone cell ids, or even satellite-based positioning systems like GPS) an object's location (often: the user) is estimated and used.
- Wikipedia's article on “Geolocation” for general info
- info about the geolocation feature in the Mozilla Firefox browser.
Relation to OpenStreetMap
OSM itself does not offer a IP or Wireless LAN geolocation service itself or collect data for it. But of course you could use external geolocation providers and, for example, show this location on an OSM-based map.
Nothing more OSM-specific here, yet.