Submitted by György Chityil ... on Fri, 01/19/2018 - 17:08 Hierarchy: NounDescription: {{aviation}} The highest altitude at which an aircraft may fly.Ngram: ceilingNgram Text: ceilingSource: WiktionaryIssue: 0Wiktionary tag: aviationNgram Count: 1Wikokit WikiText ID: 400589
