back ‧ slash /ˈbækslæʃ/ BrE AmE noun [countable]
a line () used in writing to separate words, numbers, or letters
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THESAURUS
■ other marks used in writing
▪ angle brackets British English a pair of signs <> used for enclosing information
▪ slash a line / that is used to separate words, numbers, or letters
▪ backslash a line that is used to separate words, numbers, or letters
▪ asterisk the sign * that is used especially to mark something interesting or important
▪ at sign the sign \@ that is used especially in email addresses
▪ ampersand the sign & that means ‘and’