먹어요 · 먹었어요 · 먹을 거예요 · 드세요 (honorific)
to eat; to take (medicine)
Example
아침에 빵하고 우유를 먹었어요.
I had bread and milk in the morning.
Word parts
먹다 → 먹이 (animal feed), 먹방 (mukbang = eating broadcast); 약을 먹다 = take medicine.
Good to know
For elders use 드시다 or 잡수시다: 많이 드세요 = 'Please eat a lot.'