A narrow barrel-vaulted passage or covered walkway, smaller than a full berceau.
From French 'bercelet,' a diminutive of 'berceau' with the suffix '-et.' Primarily an architectural term in English and French.
Architecture has a whole vocabulary of tunnel-like structures with different names—berceau, bercelet, arcade—and these names preserve medieval French distinctions that shaped how buildings were imagined in stone.
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