Mischievously CO and langur made loud noise (8)
I believe the answer is:
clangour
'loud noise' is the definition.
'clangour' can be an answer for 'noise' (clangour is a kind of noise). I am not certain of the 'loud' bit.
'mischievously co and langur' is the wordplay.
'mischievously' indicates an anagram (I've seen this in other clues).
'and' means one lot of letters go next to another.
'co' put after 'langur' is 'langurco'.
'langurco' anagrammed gives 'CLANGOUR'.
'made' acts as a link.
Can you help me to learn more?
(Other definitions for clangour that I've seen before include "Commotion" , "Uproar; loud repeated noise" , "Loud resounding noise" , "Loud ringing noise" .)