Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun diner

3 senses of diner

Sense 1
diner -- (a person eating a meal (especially in a restaurant))
       => eater, feeder -- (someone who consumes food for nourishment)

Sense 2
dining car, diner, dining compartment, buffet car -- (a passenger car where food is served in transit)
       => passenger car, coach, carriage -- (a railcar where passengers ride)

Sense 3
diner -- (a restaurant that resembles a dining car)
       => restaurant, eating house, eating place, eatery -- (a building where people go to eat)