Definition of back door in English:

back door

noun

  • 1The door or entrance at the back of a building.

    • ‘Eight men armed with clubs burst into the house through both the front and back doors and set upon the occupants.’
    • ‘We will be getting new front and back doors as well as a new kitchen, a new bathroom and central heating.’
    • ‘The back doors to the complexes, which open out to a shared courtyard, are broken and can't be locked.’
    • ‘He had fallen out of the back doors when the van was driven off.’
    • ‘On the other side of the alley are the rears of another strip, and the back doors of all these stores empty into the alley.’
    • ‘Its front and back doors were fortified with locks and bolts and an eight-foot piece of wood and its windows were nailed down.’
    • ‘Police immediately cordoned off the house and officers guarded the front and back doors until the examination at which it was concluded her death was not suspicious.’
    • ‘He found nearly 100 kilograms of explosives hidden in the back seat and along the two back doors.’
    • ‘‘Sadly people can no longer leave their back doors open for the neighbours to wander in and out,’ he said.’
    • ‘They pushed open the back doors and entered the building, passing by the control room and up the concrete back stairs, heading for their changing rooms.’
    • ‘Veon threw open his door and opened the back doors, grabbing his pistols and stuffing them into his belt.’
    • ‘The car's back doors have been designed with longer windows, improving the outlook for rear-seat passengers.’
    • ‘They're a link back to the days when nobody bothered to lock their back doors and everyone grew vegetables.’
    • ‘She asks him what's happening, but he doesn't reply, so she duly goes off to open the back doors while he goes off in a different direction.’
    • ‘Burglars are still carrying out daylight robberies in Putnoe and Goldington, despite police urging home owners to lock their back doors.’
    • ‘She insisted on leaving the front and back doors open at all times, and these were at either end of a passageway through the house.’
    • ‘Bob pried open one of the back doors to the building, and they all scrambled out into the cool night air.’
    • ‘Within minutes the back doors of the prison van burst open and the three prisoners escaped with the gunmen, one of whom was dressed in a Royal Mail uniform.’
    • ‘Both the front and back doors of her home are glass panelled.’
    • ‘The robber pushed past and failed an attempt to escape through the thick glass back doors of the terrace.’
    1. 1.1 A feature or defect of a computer system that allows surreptitious unauthorized access to data.
      • ‘However the back door component of the virus has no time limit; it is still running on pox-ridden PCs.’
      • ‘It also attempts to open a backdoor on infected Windows PCs, allowing hackers to exploit compromised systems.’
      • ‘Around the same time, Mydoom.A was infecting machines around the world, leaving a small backdoor to each infected computer.’
      • ‘Once downloaded, the victim unwittingly activates the backdoor by compiling Sendmail from source code.’
      • ‘Eight days after the outbreak, the author used that backdoor to download personal data from computer owners.’

adjective

  • [attributive] (of an activity) clandestine; underhanded.

    ‘backdoor private deals’
    • ‘It seems to me it might be a back door attempt to get around the trial judge's findings of fact in this case.’
    • ‘It is a back door to privatisation and should be resisted by anyone who believes in the health service.’
    against the rules, contrary to the rules, out of order, Improper, incorrect, illegitimate, unscrupulous, unethical, unprofessional
    View synonyms

Pronunciation:

back door

/ˈˌbak ˈdô(ə)r/