Old Bob with nurses clothing quietly disappears (8)
I believe the answer is:
scarpers
'disappears' is the definition.
Although both the answer and definition are verbs in their -s form, I cannot see how one could define the other.
'old bob with nurses clothing quietly' is the wordplay.
'old bob' becomes 's' (abbreviation for bob or shilling used before c97c).
'with' means one lot of letters go next to another.
'nurses' becomes 'carers' (I can't explain this - if you can you should give a lot more credence to this answer).
'clothing' is an insertion indicator.
'quietly' becomes 'p' (p for piano and quiet).
'carers' enclosing 'p' is 'carpers'.
's'+'carpers'='SCARPERS'
Can you help me to learn more?
(Another definition for scarpers that I've seen is " Cuts and runs".)