What is the meaning of Pushback?

The act of repelling an enemy, etc.

A procedure in which an aircraft is pushed backwards away from the gate by some external force, usually a special tractor.

A reversal or reduction.

Criticism of or resistance to a proposal, stance, or event.

Summary expulsion of asylum seekers, especially when violating the principle of non-refoulement.

pushback

pushback (the pushing back of refugees and migrants)

pushback (summary expulsion of asylum seekers, especially when violating the principle of non-refoulement)

Source: wiktionary.org