1push something back, push back somethingPostpone or delay an event.
- ‘the show's start time has been pushed back 10 minutes’
2North American Disagree with or oppose an action or proposal.‘it's important to push back and say that I'm the one who needs to manage the process’
- ‘the White House is pushing back against accusations of appearing to be weak’
- ‘she's pushing back on that idea and thinks it would be better not to do that’
3(of a passenger aircraft) move backwards from a passenger terminal before taking off.
- ‘the nose gear of the plane failed just after the aircraft pushed back from the gate’
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