Monarchy taking part in raffle: so thoughtful! (7)
I believe the answer is:
lesotho
'monarchy' is the definition.
Although both the answer and definition are singular nouns, I can't see how one could define the other.
'part in raffle so thoughtful' is the wordplay.
'part in' says the answer is hidden in the clue.
'LESOTHO' can be found hidden inside 'raffle so thoughtful'.
'taking' is the link.
Can you help me to learn more?
(Other definitions for lesotho that I've seen before include "African territory" , "South African kingdom" , "Trickery" , "Country entirely within South Africa" , "Kingdom surrounded by South Africa" .)