Q: gnash とはどういう意味ですか?
A: I only ever use this for 'He was gnashing his teeth.' It means to grind the teeth together.

I would guess that this is an old fashioned word which isn't used much any more. But, I could be wrong.
Q: you ever wonder what we could have been? (gnash - I hate you, I love you) とはどういう意味ですか?
A: QAの全文をご確認ください
Q: gnash とはどういう意味ですか?
A: It's used in the expression "to gnash one's teeth", which means "to grind one's teeth", usually in pain or in anger.


Q: gnash を使った例文を教えて下さい。
A: He gnashes his teeth everytime he sees the divorce papers left by his wife.


Q: gnash - imagine if
“Imagine what the world be like”

I think some words are omitted after the word “world”. What is it?
A: I think it's the word "would."
Imagine what the world would be like.
Q: gnashingの発音を音声で教えてください。
A: QAの全文をご確認ください
Q: 'gnash teeth' 'grind teeth'

Which is better?
A: "Grind teeth" is definitely more common. "Gnash teeth" is correct too, but I barely ever hear it.