backslash

/ˈbækˌslæʃ/

noun

  1. The punctuation mark \.

  2. 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

  1. To escape (a metacharacter) by prepending a backslash that serves as an escape character, thereby forming an escape sequence.