a lane of a motorway or dual carriageway for use by traffic that is overtaking or moving more quickly than the rest.
a situation in which life is hectic or highly pressured:his face showed the strain of a life lived in the fast lane [as modifier]:a youth culture of fast-lane living
Phrases
life in the fast lane
an exciting and eventful lifestyle, especially one bringing wealth and success:he’s shunning life in the fast lane for the green grass of home
fast lane in other Oxford dictionaries
Definition of fast lane in the US English dictionary
