Definition of stour in US English:

stour

(also stoor)

noun

Scottish, Northern English
  • Dust forming a cloud or deposited in a mass.

    • ‘A strategically-placed napkin saves my cassoulet from the stour as it falls to earth.’
    • ‘We buy a crumbling house, invite half a dozen builders in to demolish its interior walls - then grumble about the stour, the noise and the unsightly skip in the garden.’
    • ‘The architect, thought long and hard about the look of his upturned boats but evidently did not realise that the stoor created by construction work would trigger the fire alarms.’

Origin

Late Middle English: of uncertain origin.

Pronunciation

stour

/sto͝or/