Definitions

1. verb

to grind or crush the teeth together, typically in pain or anger

“She gnashed her teeth in frustration at the news.”

2. verb

to bite or chew with the teeth, especially with a loud, harsh sound

“The dog began to gnash his teeth and growl at the stranger.”

3. noun

a loud, harsh sound, especially of teeth biting or grinding against each other

“The gnash of the cat’s teeth was heard throughout the house.”

4. verb

to cause or make something to grind or crush with a harsh sound

“The rough stone gnashed against the sandpaper.”