Is “Cookbook” a Scrabble word?
Yes
COOKBOOK
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 Cookbook
/ˈkʊkˌbʊk/
noun
1.A book or an encyclopedia of recipes and cookery tips.
2.(by extension) Any book of strategies.
“The Anarchist's Cookbook”
Synonyms: cookery book, recipe book