The trunk line connects major cities across the country.

The color line refers to the discrimination between white and black people.

The contour lines on the map indicate the elevation of the land.

He is known for his hard-line stance on immigration.

We need to set a base-line to measure our current performance against.

The soldiers bravely stood on the firing line.

The load line indicates the maximum depth to which a ship can be loaded with cargo.

The production line at the factory is highly efficient.

The government is taking a soft line on the issue.

" That's my line - you can't steal my jokes!"