| noun | the rhythmic contraction and expansion of the arteries with each beat of the heart “he could feel the beat of her heart” |
| noun | 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” |
| noun | an animating or vital unifying force “New York is the commercial heartbeat of America” |
| pulse | verb | expand and contract rhythmically; beat rhythmically |
| pulsate | verb | expand and contract rhythmically; beat rhythmically |
| beat | verb | move rhythmically |
| flash | verb | expose or show briefly |