(n.) A room for refreshment; originally, a dining hall in monasteries or convents.

automat beanery bistro buffet buvette cafe canteen cantina chophouse chuck wagon coffee shop coffeehouse coffeeroom commons cookhouse cookshack cookshop diner dinette dining car dining hall dining room dining saloon dog wagon drive-in drive-in restaurant eatery eating house fast-food chain grill grillroom hamburger stand hash house hashery hot-dog stand kitchen lunch counter lunch wagon luncheonette lunchroom mess mess hall messroom pizzeria quick-lunch counter refectory restaurant salle a manger smorgasbord snack bar tavern tearoom trattoria