Definition of wobbleboard in English:

wobbleboard

noun

Australian
  • A piece of fibreboard used as a musical instrument, played by holding in both hands and flexing to produce a low, rhythmic booming sound.

    • ‘He invented the wobbleboard and introduced us to the Stylophone and didgeridoo.’
    • ‘He used to have a goatee like mine, and suddenly his wobbleboard sounded like some elaborate mating call.’

Pronunciation:

wobbleboard

/ˈwɒblbɔːd/