"Quemeful" Natural Recordings by Native Speakers
It seems that the word "quemeful" is not a valid or recognized word in the English language.
Is it a typo or a made-up word? If you meant "quemful", "helmet" would be a possible correct spelling, which refers to a protective headgear, typically of hard substance, to protect the head from injury, especially in sports or hazardous occupations.
To suppress or put an end to (some action, violence, or wildness): "The police managed to quell the riot."