חכו - his palate, meaning the area in the mouth which is the palate ממתקים candy/sweet כלו all of him מחמדים - means something like very friendly and nice and clean BUT ---- those are the words, it doesn't really give you a correct translation of what is written of course. this is taken from the book of songs in the bible (שיר השירים), and many jewish interpreters were trying to decipher these words and the whole chapter (chapter 5). first let me suggest that you use this instead: חִכּוֹ, מַמְתַקִּים, וְכֻלּוֹ, מַחֲמַדִּים ---- your version has some signs - NIKUD that isn't used today, I'm not sure what the source of them is, I'm not familiar with them. in general the girl who likes with this guy is telling her friends about him, saying to the girls of jerusalem (her friends) that his palate is candy (he talks sweet) and the whole of him is cute. this is one interpretation though, there are others that take those words into a little different places

Those extra marks are cantillation signs. They were similar to today’s punctuation, and indicated the rhythm, stress, and melody: https://en.wikipedia.org/wiki/Hebrew_cantillation For English / Hebrew, I like this online version: https://mechon-mamre.org/p/pt/pt3005.htm