In one game in Barcelona, the players asked me why the crowd was whistling.

Nobody could remember such a thing happening before, and the crowd whistled their displeasure.

The crowd shouted and whistled as the guards seemed to be causing her pain.

A crowd of 100 applauded and whistled for the six-car train, which was heading north from Washington.

As the royal couple's boat arrived, the crowd whistled and applauded.

The crowd whistled its unhappiness, and Bubka said he understood.

Ms. Gonzalez called out as the crowd whistled and cheered.

Police officers fired warning shots; the crowd whistled and jeered.

"We'll remember in November," he said as the crowd hooted and whistled approvingly.

The crowd booed and whistled every time an American wrestler scored a point.