Definition of slow lane
- His career is still stuck in the slow lane.
: mentally dull : stupid
: naturally inert or sluggish
: lacking in readiness, promptness, or willingness
: to make slow or slower : slacken the speed of
: to go or become slower
: a narrow passageway between fences or hedges
: a relatively narrow way or track: such as
: an ocean route used by or prescribed for ships
: Scottish variant of lone
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