a room, hall, or building where food is served or sold: a cafeteria, canteen, buffet, dining room, dining hall, eatery, restaurant, refectory

(Buddhism) refectory in a Buddhist temple

lunch, luncheon

to eat / (archaic, humble) to eat or drink

school (institution dedicated to teaching and learning)

luncheon meeting

all you can eat

food scraps, leftovers, leftover food

academy or non-university college (a post-secondary school not legally considered a university)

(education) high school, senior high school