Definition of dub-dub-dub in English:

dub-dub-dub

noun

Computing
informal
  • Short form used instead of pronouncing the three letters in the abbreviation www (World Wide Web) in Internet addresses.

    • ‘The overwhelming majority of respondents to last night's question seem to agree that the acceptable vocal abbreviation is dub-dub-dub.’
    • ‘Here, Internet sites start with ‘dub-dub-dub’.’

Pronunciation:

dub-dub-dub

/ˌdəbˌdəbˈdəb/