heartbeat

describes a very fast heartbeat, often due to excitement, fear, or exertion

a more formal or medical term for a very fast heartbeat

describes a regular and normal heart rhythm

describes a heart rhythm that is not regular, often a medical concern

refers to the noise made by a beating heart

to perceive the sound of a heartbeat, for example, with a stethoscope or by listening closely

to sense a heartbeat by touch, for example, by taking a pulse

to watch or measure a heartbeat, usually with medical equipment

used to say that the heart starts beating faster