to confront a painful situation with fortitude or stoicism: from an earlier practice of having the patient bite on a bullet during battlefield surgery when no anesthetic was available
bite the hand that feeds one
Informal to insult or harm a benefactor
See bite in American Heritage Dictionary 4 Idioms
bite off more than (one) can chew
To decide or agree to do more than one can finally accomplish.
bite (someone's) head off
To respond to a comment in an angry or reproachful way.
bite the bullet
Slang
To face a painful situation bravely and stoically.
bite the dust
Slang
To fall dead, especially in combat.
To be defeated.
To come to an end.
bite the hand that feeds (one)
To repay generosity or kindness with ingratitude and injury.