Submitted by György Chityil ... on Sat, 01/20/2018 - 01:01 Hierarchy: NounDescription: {{philately}} a cancellation mark consisting of an outer ring of concentric circles, cropped into a square shape.Ngram: square circleNgram Text: square circleSource: WiktionaryIssue: 0Wiktionary tag: philatelyNgram Count: 2