Separate outdoor drier with it, peg out clothes (8)
I believe the answer is:
disunite
'separate' is the definition.
(I know that separate can be written as disunite)
'outdoor drier with it peg out clothes' is the wordplay.
'outdoor drier' becomes 'sun' (I am not sure about this - if you are sure you should believe this answer much more).
'with' means one lot of letters go next to another.
'peg out' becomes 'die'.
'clothes' indicates putting letters inside (some letters clothe or cover others).
'sun'+'it'='sunit'
'sunit' put into 'die' is 'DISUNITE'.
Can you help me to learn more?
(Another definition for disunite that I've seen is " Split".)