A low-pitched wobbling sound.    From Wordnet, Princeton University. 

Verb (used without object) : The table wobbled on its uneven legs. ,His voice wobbled.    From Dictionary.com. 

The wobbling is a strong way to show that the goat is old and weak.    From Wordnik.com.  [Superhero Nation: how to write superhero novels and comic books » Kuro’s Review Forum] Reference

It's wobbling, I guess, Gary, wouldn't you say, kind of wobbling around.    From Wordnik.com.  [CNN Transcript May 24, 2008] Reference

The contagion, it seems, is spreading and even little Luxembourg is reported to be "wobbling".    From Wordnik.com.  [Today's the day…] Reference

Coming out of a Fredstand it's a different, more preferable kind of wobbling during those first couple of pedal strokes.    From Wordnik.com.  [Bearing Witness: Hitting From Behind] Reference

Also, this morning's "Minneapolis Star Tribune" says that those workers felt the bridge "wobbling" as they broke up the old surface.    From Wordnik.com.  [CNN Transcript Aug 6, 2007] Reference

Even with the possible support of Portugal and Denmark – which are both "wobbling" – Blair cannot even dream of commanding a majority.    From Wordnik.com.  ["The reports of my death are greatly exaggerated"] Reference

The so called "wobbling" is an effect of many factors.    From Wordnik.com.  [Mirror.co.uk - News] Reference

Were the Tories 'wobbling' on public spending, as Lord Mandelson was swift to allege?.    From Wordnik.com.  [Paul Linford] Reference

The device bends the guitar string in and out of pitch, creating a common "wobbling" effect.    From Wordnik.com.  [Expecting Rain] Reference

And Wilder laughed off reports generated by some of their rivals that Oxford are "wobbling" or feeling the pressure.    From Wordnik.com. Reference

Madge was happily unconscious of the wobbling arch.    From Wordnik.com.  [Madge Morton's Victory] Reference

Gordon stood up, wobbling a little, trying to think.    From Wordnik.com.  [Police Your Planet] Reference

Donkin in a far-away voice to Toddles 'wobbling brain.    From Wordnik.com.  [The Boy Scouts Book of Campfire Stories] Reference

Something in my mind starts him wobbling and then he slips.    From Wordnik.com.  [Highwire Act] Reference

A year into his second mandate, Lula appears to be wobbling.    From Wordnik.com.  [The Free-Spending Lula] Reference

He sat there on his cold chair, the chair wobbling slightly.    From Wordnik.com.  [Once There Was A Man] Reference

She looked at me squarely, with her head wobbling the way it did.    From Wordnik.com.  [Powdered Sugar on Bare Skin] Reference

 A second later, he lifted himself off the bed, wobbling slightly.    From Wordnik.com.  [Gone Shopping] Reference

Even now she felt her legs wobbling, she could barely breathe right.    From Wordnik.com.  [Arcana Magi - c.27: Hard Battle] Reference

The mode of progression is wobbling and risky, but the improbability of revisiting.    From Wordnik.com.  [Through the Malay Archipelago] Reference

When they arrived, Yuki saw Jamal standing on Dom Coqui's back, shaking and wobbling.    From Wordnik.com.  [The Impossible Man - Ep.16: Puerto Rican Day Parade] Reference

Despite a little wobbling, "her confidence and her balance was a lot better," he says.    From Wordnik.com.  [Look Ma, No Pedals!] Reference

Her knees were wobbling, but she slipped to her feet and stood facing Mr. Oliver bravely.    From Wordnik.com.  [Rosemary] Reference

The winder-nut, W N, Fig. 70, must hold the long core perfectly tight, to avoid wobbling.    From Wordnik.com.  [How Two Boys Made Their Own Electrical Apparatus Containing Complete Directions for Making All Kinds of Simple Apparatus for the Study of Elementary Electricity] Reference

     “I'm trying to nap in here,” he says, his bottom jaw wobbling with each word.    From Wordnik.com.  [Visitation Hour] Reference

His father called his name; the boy laughed and kept going, wobbling at an ever-faster pace.    From Wordnik.com.  [Free Sculpture With a Night’s Stay] Reference

The Lady Barbara's coach was wobbling slowly along the moonlit road that led to The Jolly Grig.    From Wordnik.com.  [Ainslee's, Vol. 15, No. 6, July 1905] Reference

I saw them go wobbling off down the street, but then I leapt up from the table and ran after them.    From Wordnik.com.  [The Great San Francisco Poetry Wars, 13] Reference

After wobbling through most of the year, the president suddenly decided to demonstrate his convictions.    From Wordnik.com.  [Missing The Moment] Reference

There was little new in the 123-page interview, but it was another painful distraction for Gore's wobbling campaign.    From Wordnik.com.  [A New Bump In Al's Road] Reference

When a car is "loose," or wobbling through turns, a crew member will jam this ring into a wheel's suspension to stiffen it.    From Wordnik.com.  [The NASCAR Network] Reference