"Steady," he snapped as the beam wavered.

They stopped in a scream of metal and the beams wavered across the sky, searching frantically, then went out.

The beam wavered over the entire surface, finally settling on the combination.

The beam of the torch wavered as he did so, and she cringed, praying that he would not notice.

A beam of light wavered outside the kitchen door.

The beam of the flashlight wavered.

The light beam wavered a little.

Searing beams wavered in wild arcs, cutting friend and foe alike.

A beam of light stabbed past her, wavered, swung, and found her spinning.

The beam wavered on her, away, and back.