Submitted by György Chityil ... on Fri, 01/19/2018 - 20:48 Hierarchy: VerbDescription: {{surveying}} To occupy a point, then enter the wrong point for the backsight, or forget to enter the backsight.Ngram: blow a backsightNgram Text: blow a backsightSource: WiktionaryIssue: 0Wiktionary tag: surveyingNgram Count: 3