1.A festival; a holiday; a solemn, or more commonly, a joyous, anniversary. "The seventh day shall be a feast to the Lord." "Now his parents went to Jerusalem every year at the feast of the passover." Note: An Ecclesiastical feast is called a immovable feast when it always occurs on the same day of the year; otherwise it is called a movable feast. Easter is a notable movable feast.
2.A festive or joyous meal; a grand, ceremonious, or sumptuous entertainment, of which many guests partake; a banquet characterized by tempting variety and abundance of food. "Enough is as good as a feast." "Belshazzar the King made a great feast to a thousand of his lords."
3.That which is partaken of, or shared in, with delight; something highly agreeable; entertainment. "The feast of reason, and the flow of soul."