Rich and hot-headed (5)
I believe the answer is:
plush
'rich' is the definition.
(similar in meaning)
'and hot-headed' is the wordplay.
'and' becomes 'plus'.
'hot-headed' becomes 'h' (this might be a standard abbreviation of which I'm unaware).
'plus'+'h'='PLUSH'
Can you help me to learn more?
(Other definitions for plush that I've seen before include "Fabric; richly luxurious" , "Rich fabric" , "Cut pile, softer than velvet" , "Fabric with a long velvety pile" .)