Definition of push:
to apply a force
to (an object) such that it moves away
from the person or thing applying the force; to continually attempt to persuade (a person) into a particular course of action
"in his anger he pushed me against the wall and threatened me."
a short, directed application of force
; an act of pushing; an act of tensing the muscles of the abdomen in order to expel its contents
"give the door a hard push if it sticks."