Beat can mean “hit repeatedly,” “stir vigorously,” or “defeat.” A beat can also be a rhythmic pulse, a physical blow, or a funky poet. In terms of number of definitions, it’s hard to beat this little word.
Along with its many definitions, beat is featured in a wide variety of idioms. If someone tells you to "beat it," he wants you to go away. If you "beat around the bush," you're not getting to the point. If you "beat the clock," you finish something just in time. One thing beat is not, however, is a nutritious, red root. That's a beet.