Obstacle ... or any one of four black squares in this puzzle?

Usage examples of roadblock.

United States 7th Infantry Division were manning a hastily erected roadblock on the dirt road paralleling Korean National Route 1.

There were only two American divisions in the Seoul area, the 7th and the 1st Marine, and the armed Americans at the roadblock were not Marines.

When Jennings got close to the roadblock, he suddenly stopped the jeep and raised his hands over his head.

Allen III, a somewhat plump, pleasant-faced twenty-seven-year-old who was commanding officer of Company C, 1st Battalion, 27th Infantry, 7th Infantry Division, was hesitantly pleased with his current mission, the establishment and operation of a roadblock on a road south of Suwon.

Charley Company roadblock and Division Headquarters, none of them direct.

MP-5 he had put on the floorboards and told the men in back to be ready to shoot at the roadblock as they rammed through.

As they came closer, Murdock saw that both roadblock rigs were sedans.

The weapons in back of the six-by kept yammering as the truck plowed past the rest of the roadblock and slammed down the highway, picking up speed.

Our objective is that first Loyalist roadblock up the river about forty miles away.

We should be able to move in and take out the personnel, then borrow one of their vehicles and charge right through that second roadblock down the way.

SEALs turned around and fired at the roadblock they had just come through.

It had a friendly growth of brush and trees they could use for cover as they passed the roadblock half a mile over and kept right on going.

We travel down that way, and as soon as we spot the roadblock ahead, the three of us will get off while you and your driver continue on.

Five miles out of the main port of town, they spotted the roadblock ahead.

The guards at the first roadblock would be sure to radio their men down here that the famous dancer was coming.