backslash (\)
Definition - One of the many names for the \ symbol. It arose from the field of computer science in the latter half of the 20th century.

Example -

Etymology -
The first OED citation for the verb slash is from 1382 where it denotes "to cut with a stroke of a blade or whip." It perhaps derives from the Middle French esclachier, to break.

Oxford English Dictionary -
The first citation for the punctuation mark slash is from 1961; the first citation for backslash is from 1982:
"…Arguments enclosed in backslashes refer to disk-file operations."
(Byte Magazine, January 1982, 413/1 )

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