Elevated position where one of four rooks sits (6)
I believe the answer is:
height
This might be a double definition.
'elevated position' is the first definition.
The answer and definition can be both human attributes as well as being singular nouns.
Perhaps you can see a link between them that I can't see?
'where one of four rooks sits' is the second definition.
Although both the answer and definition are singular nouns, I can't see how they can define each other.
Can you help me to learn more?
(Other definitions for height that I've seen before include "Rising ground; extreme example" , "Hill, elevation" , "Dimension from top to bottom" , "Loftiness" , "Measurement from top to bottom" .)