Desultorily cleans out a foreign agency (9)
I believe the answer is:
consulate
'a foreign agency' is the definition.
Although both the answer and definition are singular nouns, I can't see how they can define each other.
'desultorily cleans out' is the wordplay.
'cleans out' anagrams to 'CONSULATE'.
However, I'm not clear how the anagram is indicated.
Can you help me to learn more?
(Other definitions for consulate that I've seen before include "embassy" , "Diplomatic residence" , "office" , "Diplomatic mission" , "Government official in a foreign country" .)