Crossword Genius

Relish playing the nurse (8)

Ross

I believe the answer is:

dressing

I'm a little stuck... Click here to teach me more about this clue!

'relish' is the definition.

'playing the nurse' is the wordplay.
I cannot quite see how this works, but
'playing' could be 'in' and 'in' is found in the answer.
This explanation may well be incorrect...

Can you help me to learn more?

(Other definitions for dressing that I've seen before include "Covering for wound; sauce for salad" , "Donning clothes" , "Compress" , "Sauce for salads" , "Sauce - alignment - bandage" .)

I've seen this clue in the Evening Standard.
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