What does Backslash mean?

Backslash meaning in Etymology Dictionary

1982, new punctuation symbol introduced for computer system functions, from straight back (adj.) + slash (letter.).

Backslash meaning in Computer Science Dictionary

Alternatively known as a backward slash and reverse solidus, the backslash is a character "" very first introduced by Bob Bemer in 1960. A backslash can be used to represent a file course in MS-DOS and Microsoft windows, including, c:windows is a typical example of the backslash getting used.

Backslash - German to English