Nurse has no new personal attachment (6)
I believe the answer is:
tendon
'personal attachment' is the definition.
Although both the answer and definition are singular nouns, I don't see how one could define the other.
'nurse has no new' is the wordplay.
'nurse' becomes 'tend' (tend can mean to nurse or look after).
'has' says to put letters next to each other.
'no' becomes 'O' (O resembles 0).
'new' becomes 'n' (common abbreviation eg NT for New Testament).
'tend'+'o'+'n'='TENDON'
Can you help me to learn more?
(Other definitions for tendon that I've seen before include "Fibrous band" , "horse's hamstring" , "It's attaches tissue to bone" , "In words" , "Muscle attacher" .)