(1). n. A repeated attempt to obtain a different answer or result, often used while feigning guilt, and even more often resulting in something being escalated to management.
(2). v. To annoyingly attempt to obtain a different answer or result, often (depending on how pushy you are) resulting in some sort of successful outcome.
“Sorry for the push back, Andy, but I really think we should be able to get this done for twenty bips. I’ll take this all the way up the chain of command, if I have to.”