Definition of backdraught in English:


(US backdraft)


  • 1A current of air or water that flows backwards down a chimney, pipe, etc.

    ‘when she opened the window she created a backdraught that sucked the fire right through the bedroom’
    • ‘The backdraft from its thrusters sent all of the cars flying.’
    • ‘Dust suppressants work by binding fine particles to larger particles that cannot be swept up in the backdraft of passing vehicles.’
    • ‘However, out on the open road, the absence of a backdraught excluder screen (optional but not on the test car) meant wind noise and turbulence limited cruising speeds to what was comfortable.’
    • ‘He won the race after the lead Plymouth spun out temporarily when it lost its rear window to the suction of the backdraft.’
    • ‘Some of his serving yesterday was so furious, and flew by with such force, it had his opponent looking nervously behind him for the backdraft.’
    • ‘As Myers orders him to drive away from a filling station without waiting for change, we feel embarrassed on behalf of the pump attendant left standing in their backdraft.’
    • ‘He leapt over the side and grabbed his hat just as a gust of backdraft from the airship started to send it flying away.’
    steady flow, stream, slipstream
    View synonyms
  • 2A phenomenon in which a fire that has consumed all available oxygen suddenly explodes when more oxygen is made available, typically because a door or window has been opened.

    • ‘When sealing any home, you must always be aware of the danger of indoor air pollution and combustion appliance ‘backdrafts.’’
    • ‘These in turn have led to changes in the types of fires that fire fighters are now responding to and the phenomena of ‘flashover’ and ‘backdraught’ are becoming more common.’
    • ‘Use a hinged damper weather hood to prevent backdraft and place it at least 12 inches off the ground.’
    • ‘Mr Atkinson said: ‘Two or three years down the line some firefighters still don't have backdraft and flashover training.’
    • ‘Plus, you have to watch for possible explosions, gas leaks, backdrafts, and flash fires, and so you can't just point your firefighters at fires and let them work on their own.’
    • ‘Falling masonry, backdrafts and explosions are all very real dangers facing a firefighter outside the training room.’
    • ‘There are other hazards - collapsing ceilings, backdrafts, pools of oil, sudden explosions, exposed wiring, annoying little cleaning droids - but they all pale into insignificance next to the burning building around you.’