Definition of twiddler in US English:

twiddler

noun

  • See twiddle

    • ‘The production is functional but uninspiring, the knob - twiddlers unwilling to sail into any waters that might look dangerous or - perish the thought - exciting.’
    • ‘Every single news organisation is critical of him and his band of thumb twiddlers.’
    • ‘The result is a very creative album that effectively blends the sounds of two obviously talented knob twiddlers - experts, even.’

Pronunciation

twiddler

/ˈtwidlər/