Submitted by György Chityil ... on Fri, 01/19/2018 - 22:23 Hierarchy: NounDescription: {{architecture}} A small opening in a vaulted roof of a circular or crescent shape. {{defdate|from 17th c.}}Ngram: lunetteNgram Text: lunetteSource: WiktionaryIssue: 0Wiktionary tag: architecturefrom 17th c.Ngram Count: 1