What is the meaning of "do or die"?

The meaning of "do or die" is:

a situation that is extremely important, and failure would result in a big problem


What is the definition of "do or die"?

The definition of "do or die" is:

a situation that is extremely important, and failure would result in a big problem



"do or die" means

a situation that is extremely important, and failure would result in a big problem

Example Sentences:

A: Do you have a final exam today?
B: Yes I do, it’s a do or die exam. If I don’t get a good mark, I will fail the class.

When Quentin had to give a presentation to some new clients, his boss warned him that it would be a do or die situation.

From the Blogs:

Exam Week: It’s do or die people

Media:

do or die