"There's probably a fine gray line and you don't want to go too far," he added.

To starboard, he saw a long gray line that must be the coast.

And a professional officer at that, a product of the long, gray line.

He sees the gray line that this decision could bring about.

The gray lines show the forecasts in the 2002, 2003 and 2004 reports.

The thin gray line of first light began to spread slowly over the horizon.

Tom looked down the line of tents, only a little lighter gray than the ground.

Her lips were pressed together in a narrow gray line.

At the end of the fourth day the mountains were only a gray line on the horizon behind them.

The walls are tones of gray with very straight lines.