Submitted by György Chityil ... on Fri, 01/19/2018 - 18:28 Hierarchy: NounDescription: {{engineering}} the repeated striking of an object to break or shape it, as in percussion drillingNgram: percussionNgram Text: percussionSource: WiktionaryIssue: 0Wiktionary tag: engineeringNgram Count: 1Wikokit WikiText ID: 1048543