GNASH, nash. To strike the teeth together, as in anger or pain as, to gnash the teeth in rage.
GNASH, nash. To grind the teeth.
He shall gnash with his teeth and melt away. Psalms 112
1. To rage even to collision with the teeth to growl.
They gnashed on me with their teeth. Psalms 35
The King James Bible has stood its ground for nearly 400 years. However, during that time the English language has changed, and with it the meanings of some words it used. Here are more than 6,500 words whose definitions have changed since 1611.Wikipedia
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