D defs.my
Entry 1 sense Webster, 1913

heartbeat

· IPA /ˈhɑɹtˌbit/
01 n. the audible and palpable rhythmic contraction and expansion of the arteries with each beat of the heart; as, he listened to her heartbeat w…
  1. 1.
    the audible and palpable rhythmic contraction and expansion of the arteries with each beat of the heart; as, he listened to her heartbeat with a stethoscope.
Phrases & compounds
in a heartbeat — immediately.
Syn. pulse, pulsation, beat.