Nurse turned Hoskins around, primarily for this! (5)
I believe the answer is:
enema
'this' is the definition.
The definition suggests a singular noun which matches the answer.
'nurse turned hoskins around primarily' is the wordplay.
'nurse' becomes 'en' (abbreviation for enrolled nurse).
'turned' says the letters should be written backwards.
'hoskins' becomes 'me' (where the crossword setter is 'Hoskins').
'primarily' suggests taking the first letters.
The first letter of 'around' is 'a'.
'me' back-to-front is 'em'.
'en'+'em'+'a'='ENEMA'
'for' is the link.
Can you help me to learn more?
(Other definitions for enema that I've seen before include "Suppository" , "Colonic irrigation" , "fundamental procedure?" , "Medical liquid introduced anally" , "In the end medical procedure" .)