Oxford Dictionary English passing lane nounnoun BrE BrE//ˈpæsɪŋ leɪn// ; NAmE NAmE//ˈpæsɪŋ leɪn// (North American English) (British English outside lane) Types of road Add to my wordlistjump to other resultsthe part of a major road such as a motorway or interstate nearest the middle of the road, where vehicles drive fastest and can go past vehicles ahead See related entries: Types of roadSee passing lane in the Oxford Advanced American DictionaryCheck pronunciation: passing lane oxfordlearnersdictionaries.com