A computer usually translates the sound into a picture made of wiggly lines, known as a spectrogram.

An arpeggiated chord is written with a wiggly line going from top to bottom in front of the chord.

All he could see from his low perspective was a dark wiggly line, moving about 300 feet away.

There's such nice wiggly lines beside his eyes, where he laughs.

And you see those wiggly lines on the top?

Its drive flame made wiggly lines on Brennan's instruments.

Agitrons: wiggly lines around a shaking object or character.

Finally he was finishe( He laid the pencil down and pointed to the wiggly lines.

The wiggly line in this box is an oscilloscope.

That would make for a wiggly line, but he didn't care; he just wanted the job done quickly.