Is “Backslash” a Scrabble word?
Yes
BACKSLASH
Valid in at least one Scrabble dictionary
Valid in these dictionaries
SOWPODS / CSW
Scrabble UK & International
TWL / NWL
Scrabble North America
Large English Dictionary
General English word list
Meaning of 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
verb
1.To escape (a metacharacter) by prepending a backslash that serves as an escape character, thereby forming an escape sequence.