Nappy back in John? (5)
I believe the answer is:
terry
'nappy' is the definition.
(terry is a type of nappy)
I cannot understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for terry that I've seen before include "Terence (dim.)" , "(Rhyming) man's name" , "Loop of pile fabric; England footballer" , "Cotton pile fabric used for towels and bath robes" , "Cloth to make towels" .)