Crossword Genius

Curved structure (4)

Ross

I think it could be either:

dome

arch

'curved structure' is the definition.
(architectural structure)

This is all the clue.

(Other definitions for arch that I've seen before include "Inner side of foot" , "Supporting structure" , "Curve that spans an opening" , "Bend into upward curve" , "Devilish" .)

I've seen this clue in The Washington Post, the LA Times, the Evening Standard, The Independent, the USA Today, the Sydney Morning Herald, The Telegraph, The Times, The Mirror, The Sun and The Guardian.
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