a line or strip of white in the centre of a road to separate traffic going in different directions
2.
a white lamination in the hoof of a horse
Examples of 'white line' in a sentence
white line
This involves removing the white line from the centre of the road.
Times, Sunday Times (2014)
The latter group routinely drive on the other side of the white line into oncoming traffic.
Times, Sunday Times (2013)
I moved right over to straddle the white line down the centre of the road because there was no oncoming traffic.
Times, Sunday Times (2012)
The vehicle features 26 sensors to monitor road signs, white lines and other cars and pedestrians.
Times, Sunday Times (2012)
It can also be set up in minutes to protect emergency roadworks, without the need to paint white lines on the road to check speed measurements.
Times, Sunday Times (2006)
They are painted grey and require no white lines on the road to verify their speed readings, which makes them more difficult to spot than current systems.
Times, Sunday Times (2014)
Consequently French drivers usually give cyclists more space, and indeed they often cross the centre white line with all four wheels.