Submitted by György Chityil ... on Fri, 01/19/2018 - 18:28 Hierarchy: NounDescription: {{military|aviation|US}} optionally piloted vehicle;Ngram: OPVNgram Text: OPVSource: WiktionaryIssue: 0Wiktionary tag: aviationNgram Count: 1Wikokit WikiText ID: 127018