Definition of gnash in English:

gnash

Line breaks: gnash
Pronunciation: /naʃ
 
/

verb

[with object]
  • 1Grind (one’s teeth) together as a sign of anger (often used hyperbolically): no doubt he is gnashing his teeth in rage
    More example sentences
    • Junko thought in anger as she gnashed her teeth.
    • Should we clean our teeth before gnashing them in anger at another signal failure?
    • Alex reached in and extracted what looked like a crocodile head that was gnashing its teeth together menacingly.
    Synonyms
    grind, strike together, grate, rasp, grit
    archaic gristbite
  • 1.1 [no object] (Of teeth) strike together; grind: the dog’s jaws were primed to gnash
    More example sentences
    • Gilgamesh roared, his teeth gnashing together in an effort to hold the stronger, older man back.
    • Her face contorted into an animalistic snarl, her muscles tensed, her concentration rose to a new acme, her blood raced, her hair stood on end, and her teeth gnashed together.
    • That's our teeth gnashing, that noise, by the way.

Origin

late Middle English: perhaps related to Old Norse gnastan 'a gnashing'.

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