Crossword Genius

One displays fashion line (5)

Ross

I believe the answer is:

model

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'one' is the definition.
Both the definition and answer are adjectives. Perhaps they are linked in a way I don't understand?

'fashion line' is the wordplay.
'fashion' becomes 'mode' (synonyms).
'line' becomes 'l' (used when specifying particular lines from a poem).
'mode'+'l'='MODEL'

'displays' acts as a link.

Can you help me to learn more?

(Other definitions for model that I've seen before include "Artist's sitter" , "She parades on the catwalk" , "Replica (on the catwalk?)" , "Moss, say" , "Miniature replica" .)

I've seen this clue in The Sun.
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