Definition of "wobble"

That should have been that, but Hart caught a dose of the Hennessey wobbles and spilled Adlene Guedioura's long-range shot.

2011 October 29, Neil Johnston, “Norwich 3 - 3 Blackburn”, in BBC Sport‎

“I Knew You Were Trouble,” one of the year’s great pop songs, begins like a sock-hop anthem, with jaunty guitars. A dubstep wobble arrives about halfway through like a wrecking ball, changing the course not just of the song but also of Ms. Swift’s career.

2012 October 24, Jon Caramanica, “No More Kid Stuff for Taylor Swift”, in The New York Times‎

The apparition wobbled in front of Arthur's eyes, though the truth of the matter is probably that Arthur's eyes were wobbling in front of the apparition. His mouth wobbled as well.

1982 August, Douglas Adams, Life, the Universe and Everything (The Hitchhiker’s Guide to the Galaxy; 3), London: Pan Books, page 27

Investors face a quandary. Cash offers a return of virtually zero in many developed countries; government-bond yields may have risen in recent weeks but they are still unattractive. Equities have suffered two big bear markets since 2000 and are wobbling again. It is hardly surprising that pension funds, insurers and endowments are searching for new sources of return.

2013 July 6, “The rise of smart beta”, in The Economist‎, volume 408, number 8843, page 68

He said: “This front wheel wobbles.”I said: “It doesn’t if you don’t wobble it.” It didn’t wobble, as a matter of fact—nothing worth calling a wobble.

1900, Jerome K. Jerome, Three Men on the Bummel‎