Tell blonde nurses to come around (9)
I believe the answer is:
enlighten
'tell' is the definition.
(thesaurus)
'blonde nurses to come around' is the wordplay.
'blonde' becomes 'light' (I've seen this before).
'nurses' becomes 'EN EN' (two abbreviations for Enrolled Nurse).
'to come around' indicates putting letters inside.
'light' put within 'enen' is 'ENLIGHTEN'.
(Other definitions for enlighten that I've seen before include "Instruct" , "Edify" , "Free from ignorance" , "Give instruction" , "Give knowledge to, inform" .)