1. to push something out or thrust it forcibly outwards.
push out the deadline/date
The phrasal verb 'push out' means to push something out or thrust it forcibly outwards. "There are some plates pushing out of the cupboard, could you close it properly?" It can mean to shove, push or force someone out or outward. "I tried to cue for the tickets but bigger people kept pushing me out of the line." "I was pushed out of the organisation because of my beliefs." It can also mean to exclude someone emotionally. "He has been drinking a lot lately, I tried to talk to him about it but he keeps pushing me out."