Textual thesaurus for "heartbeat"

(noun) beat, pulsation, pulse

the rhythmic contraction and expansion of the arteries with each beat of the heart

he could feel the beat of her heart

(noun) New York minute, split second, blink of an eye, wink, instant, trice, twinkling, flash, jiffy

a very short time (as the time it takes the eye to blink or the heart to beat)

if I had the chance I'd do it in a flash