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| heart·beat [ hrt bt ] (plural heart·beats) |
noun |
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| Definition: |
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1. contraction of heart muscle: a single contraction of the lower chambers of the heart that drives blood through the body
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2. continuous pulsation of heart: the continuous pulsating movement and sound made by a beating heart
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3. driving force: the driving force behind something
 Caucus discussion is the party's heartbeat.
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