Fairly standard yarn Dior used in new design (8)

I believe the answer is:

ordinary

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'design' is the definition.
(ordinary is a kind of design)

'fairly standard yarn dior used in new' is the wordplay.
'yarn dior' anagrams to 'ORDINARY'.
But, I'm not sure how the anagram is indicated.

Can you help me to learn more?

(Other definitions for ordinary that I've seen before include "pedestrian" , "Commonplace, average" , "Run of the mill" , "'Commonplace, banal (8)'" , "Regular" .)

I've seen this clue in The Irish Times.

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