The killer worm has been contained, so far, and there is constant vigil that it does not spread any further.

Keep constant vigil over your site-because just when you think you've said what you wanted to say-10 others are saying more!

At the same time, he kept up a constant vigil with the clouds, eager to bring in the crop before the skies opened.

Josh gets most of the credit due to his constant vigil at her bedside.

Beginning at nine o'clock in the morning, he maintained a constant vigil throughout the day.

Her eyes moved slowly from the entrance to the hidden bay, along the shoreline and back in a near constant vigil.

Despite his infirm condition, he would have to remain on constant vigil.

Because many of the homeless also live around the Church during the day, police keep a constant vigil on the church's surroundings.

Outside his room, fellow students keep a constant vigil.

The association maintains a constant vigil on common issues that threaten the livelihood of its members.