Is “Diner” a Scrabble word?
Yes
DINER
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 Diner
/ˈdaɪnə(ɹ)/
noun
1.One who dines.
2.A dining car in a railroad train.
3.A typically small restaurant, usually modeled after a railroad dining car, that serves lower-class fare, normally having a counter with stools along one side and booths on the other, and often decorated in 50s and 60s pop culture themes and playing popular music from those decades.
Synonyms: dining car, pub