This is the 785th most frequent Hungarian word.
király
"King" or "cool" (slang).
Here, 'király' refers to a monarch or ruler.
Az ország királya igazságos uralkodó volt.
The king of the country was a just ruler.
In this context, 'király' is a colloquial expression meaning 'cool' or 'great'.
Ez a szandál nagyon király, meg szeretném venni.
This sandal is very cool, I would like to buy it.
Here, 'király' refers specifically to the king chess piece.