heartbeat
Pronunciation:
/ˈhɑːtˌbiːt//ˈhɑɹtˌbit/noun
Definitions
One pulsation of the heart; especially an irregular one, hence the emotion which causes it.
Example: He alone gives me such heartbeats
The rhythm at which a heart pulsates, a cardiac indicator
Example: If your heartbeat doesn't normalize soon, consult a doctor!
A driving impulse or vital force.
Example: Music is the heartbeat of the people.
A very short space of time; an instant.
Example: The ambulance arrived in a heartbeat.