Definition from macmillandictionary.com
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I could feel the beat of his heart.
a heart rate of 65 beats a minute
Her heart seemed to miss a beat.
music with a slow pulsating beat
the sound of a single drum beat
the beat of horses’ hooves
A waltz has three beats in a bar.
The two officers used to walk the beat together.
We intend to increase the number of police on the beat.