Hot current circling capital of Rwanda (8)
I believe the answer is:
tropical
'hot' is the definition.
(similar in meaning)
'current circling capital of rwanda' is the wordplay.
'current' becomes 'topical' (similar in meaning).
'circling' means one lot of letters goes inside another (circling can mean going around or containing).
'capital of rwanda' becomes 'r' (I am not sure about this - if you are sure you should believe this answer much more).
'topical' going around 'r' is 'TROPICAL'.
Can you help me to learn more?
(Other definitions for tropical that I've seen before include "Relating to hot and humid parts" , "Found in Cancer or Capricorn" , "Hot and humid type of weather" , "it could be too hot" , "April-Oct, unusually humid and very hot" .)