Submitted by György Chityil ... on Fri, 01/19/2018 - 23:49 Hierarchy: NounDescription: {{context|medieval|_|architecture}} A round hole or circle with which an opening for an arrow slit terminates.Ngram: oilletNgram Text: oilletSource: WiktionaryIssue: 0Wiktionary tag: medievalarchitectureNgram Count: 1