The definition of gnash is to grind the teeth in pain or anger.
When your child disobeys you for the millionth time and you are filled with great anger and you grind your teeth together in frustration, this is an example of gnash.
To grind or strike (the teeth, for example) together.
To bite (something) by grinding the teeth.
To grind or strike (the teeth) together, as in anger or pain.
To bite by grinding the teeth.
To grind the teeth together.
The act of gnashing.
To grind between the teeth.
To gnash the air in fury.
To gnash a carpet.
(Geordie) To run away.
Origin of gnash
- Alteration of Middle English gnasten, gnaisten possibly of Scandinavian origin Old Norse gnastan a gnashing
From American Heritage Dictionary of the English Language, 5th Edition
- From Middle English gnasten. Origin unknown; the word is probably either Germanic or onomatopoeic. Compare Old Norse gnastan, German knirschen, German Low German gnirschen, gnörschen.