"The villagers gathered in the town square to celebrate the harvest with a magnificent feast featuring roasted turkey and pumpkin pie."
In plain English: A feast is a large meal with lots of delicious food that people enjoy together.
"The family gathered for an annual feast on Thanksgiving night."
Usage: Use the noun form to describe an elaborate meal that is typically celebratory or religious rather than just any big dinner. As a verb, it means to eat heartily and enjoyably, often implying indulgence beyond normal limits.
Verb
1
partake in a feast or banquet
"The villagers gathered at the town square to feast on roasted turkey and pumpkin pie during the harvest festival."
The word feast comes from the Latin festum, which originally meant "holiday" or "festival," before traveling through Middle French into English to describe a large meal. Its ultimate roots lie in an ancient Proto-Indo-European term for "god.