A beet is a reddish-purple colored root vegetable. You can roast beets, slice them, and add them to a salad.
When you peel a cooked beet, your fingers will be temporarily stained red. Beets are distinctive for their deep color and their round shape — though there are also a few varieties that are yellow. You can eat both the round, fleshy part of a beet plant and also its green leaves. The British version of beet, which is thought to have a Celtic origin, is beetroot.