"Kherna" is an almost forgotten word in Lughatul Trengganu, which means, to cut things to become small. Mostly "kherna" word is use when the cut become too small to be usable for anything it was meant to be. It's a kind of derogatory word.
So, one may hear that "Mok suruh Mek kerat mmolek daun kuchai ning, doh yang Mek gi kherna gining semer, nok buat letok dalam jjemput guaner".
Which is, the Mom asked his daughter to cut the onion's leave properly but the result became a bit to small to be used for cooking.
Thinking about that, it's already quite some time that l didn't taste the jjemput gandum berdaun kuchai..