Definition of vavoom in US English:

vavoom

(also va-va-voom, va-va-va-voom)

exclamation

US
informal
  • Expressing admiration for something regarded as excitingly appealing, especially a woman's curvaceous figure.

adjective

US
informal
  • Of a woman: voluptuous; curvaceously sexy.

noun

US
informal
  • Vigour, sex-appeal; oomph.

Origin

1950s. Imitative of the sound of an engine being revved.

Pronunciation

vavoom

/ˌvaˈvuːm/