Meaning of gnash your teeth In English

• 0 to bring your teeth forcefully together when you are angry:

  • The monster roared and gnashed its teeth.

  • New Yorkers gnashed their teeth about the governor's decision to raise property taxes.

• 1 to show that you are angry or annoyed about something bad that you can do nothing to stop:

  • Petersen is gnashing his teeth over his inability to prove his innocence.