Submitted by György Chityil ... on Fri, 01/19/2018 - 18:37 Hierarchy: NounDescription: {{video games|by extension}} The act of clearing four lines at once (the maximum possible) in ''Tetris''.Ngram: TetrisNgram Text: TetrisSource: WiktionaryIssue: 0Wiktionary tag: by extensionNgram Count: 1