backslash
From Longman Dictionary of Contemporary EnglishRelated topics: Newspapers, printing, publishing, Computersbackslashback‧slash /ˈbækslæʃ/ ●○○ noun [countable] TCNa line (\\) used in writing to separate words, numbers, or lettersFrom Longman Business Dictionarybackslashback‧slash /ˈbækslæʃ/ noun [countable]COMPUTING a line (\\) used in writing to separate words, numbers, or letters