This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

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n. Plural form of cornice.

"While landmarks commission members went over the existing building's architectural features such as cornices and colonnades, some in the audience of about 60 at Pace University in lower Manhattan held signs telegraphing their opposition."

corniced    cornices    cornicing   

framework    moulding    molding    furnish    provide   

architrave cornice    horizontal cornice    block cornices    cornice-ring   

frieze    buttress    ceiling    woodwork    balustrade