Etymology 1 
From Middle English feest, feste, fest, from Old French feste, from Latin festa, plural of festum (“holiday, festival, feast”), from Proto-Indo-European *dʰēs- (“god, godhead, deity”); see also Ancient Greek θεός (theos, “god, goddess”). More at theo-.
feast (plural feasts)
- A very large meal, often of a ceremonial nature.
- We had a feast to celebrate the harvest.
- Something delightful
- It was a feast for the eyes.
Derived terms 
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Etymology 2 
- (intransitive) To partake in a feast, or large meal.
- I feasted on turkey and dumplings.
- (intransitive) To dwell upon (something) with delight.
- I feasted on the beautiful picture.
- (transitive) To hold a feast in honor of (someone).
- We feasted them after the victory.