Gnash is a 5 letter English word. It's valid Scrabble word worth 9 points. It's valid Words with friends word worth 10 points.
You can make 53 anagrams from letters in gnash (aghns).
1490-1500; variant of obsolete gnast, Middle English gnasten; compare Old Norse gnastan gnashing of teeth
All the world must respect our tapus, or we gnash our teeth.
Men and women will gnash their teeth against their own children.
So the North Wind could only gnash his teeth, and say, "Whoo, whoo!"
Then she would stare at the child and gnash her teeth as though with hate.
Coming back in the cars, I had a rencontre that makes me gnash my teeth yet.
All at once he put his hand on his sword, and gnash his teeth.
He would hunt for me, and gnash his teeth at the escape of his prey.
They fall into a rage, and gnash with their teeth, as they do not dare openly to shout.
He did so; Jeanne hearkened; and then it was Sweder's turn to gnash his teeth.
With them I can with one gnash divide a knight in half at the waist.