Palatial stir on the phone (5)
I believe the answer is:
royal
This might be a double definition.
'palatial' is the first definition.
Both the definition and answer are adjectives. Maybe there's a link between them I don't understand?
'stir on the phone' is the second definition.
The definition and answer can be both man-made objects as well as being singular nouns.
Maybe you can see an association between them that I can't see?
Can you help me to learn more?
(Other definitions for royal that I've seen before include "Kingly or queenly" , "One of Queen's family" , "Suitable for king or queen" , "Of sovereigns" , "complete" .)