English local's exclamation of amazement at lovely decorative feature (7)

I believe the answer is:

cornice

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'decorative feature' is the definition.
(I've seen this before)

I don't understand the remainder of the clue.

(Other definitions for cornice that I've seen before include "Crane-fly" , "decorative feature" , "Moulding along top of building" , "Ledge of snow overhanging a precipice" , "Ornamental wall moulding" .)

I've seen this clue in The Irish Times.

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