Is “Coursebook” a Scrabble word?
Yes
COURSEBOOK
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 Coursebook
/ˈkɔː(r)sbʊk/
noun
1.A textbook, a book designed to accompany a specific academic course, or one specified by the writers of the course to be read by its students.