backslash
/ˈbækˌslæʃ/noun
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The punctuation mark \.
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Used erroneously in reference to, or in reading out, the ordinary slash, that is, the punctuation mark /.
Synonyms:
reverse solidus, slosh, whack
Antonyms:
slash
verb
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To escape (a metacharacter) by prepending a backslash that serves as an escape character, thereby forming an escape sequence.