American Slang & Idioms - BITE THE BULLET

источник: http://youtu.be/SqBN5xHtBQM

This is a phrase which means to endure pain.
This expression originated in battlefields. Prior to anesthetics, soldiers were given a bullet to bite with their teeth to help them endure pain after injury or before an operation.
The phrase also means to be strong during pain.
For example, you can say, Its time to just bite the bullet and admit that you did wrong.