|1.||[ noun ] the rhythmic contraction and expansion of the arteries with each beat of the heart|
|Synonyms:||pulse beat pulsation|
"he could feel the beat of her heart"
|Related terms:||periodic_event throb diastole systole beat pulsate|
|2.||[ noun ] a very short time (as the time it takes the eye blink or the heart to beat)|
|Synonyms:||instant split_second twinkling wink jiffy flash trice New_York_minute blink_of_an_eye|
"if I had the chance I'd do it in a flash"
|Related terms:||moment flash|
|3.||[ noun ] an animating or vital unifying force|
"New York is the commercial heartbeat of America"