Framework from Princess Royal? (7)
I believe the answer is:
chassis
'framework' is the definition.
(chassis is a kind of framework)
I cannot understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for chassis that I've seen before include "Undercarriage" , "Base-frame of car" , "an estate may be built on it" , "Car body" , "Car's body" .)