Definition of diners:
(n) :
(US) A typically small restaurant, historically 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.
(n) :
One who dines.
(n) :
A dining car in a railroad train.
(n) :
(rare) One who gives a dinner.
(n) :
A commemorative currency of Andorra, not legal tender, divided into 100 centims.