Crossword Genius

Image of veneration like Iona’s centres (4)

Ross

I believe the answer is:

ikon

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'image' is the definition.
(I know that image can be written as ikon)

I don't understand the rest of the clue.

Can you help me to learn more?

(Other definitions for ikon that I've seen before include "Religious painting" , "Devotional painting in Eastern Churches" , "Revered image" .)

I've seen this clue in The Times.
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