Is “Backrest” a Scrabble word?
Yes
BACKREST
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 Backrest
/ˈbækˌɹest/
noun
1.The back piece of a chair, used to support the sitter's back.
2.A guide attached to the slide rest of a lathe, and placed in contact with the work to steady it in turning.