(idiomatic) An admonition to oneself to calm down when overly excited, especially in terms of romantic attraction.

Alternative form of be still my heart

(medicine) A syndrome marked by weakness, edema and shortness of breath, due to the inability of the heart to circulate the blood adequately to the lungs and other tissues.

The number of heart beats per unit of time, usually expressed as beats per minute.

A wearable device that allows a user to measure their heart rate in real time, usually consisting of a chest strap transmitter and a wrist receiver.

(idiomatic) Of a person: having the same disposition, feelings, or opinions as oneself. / (idiomatic) Of a situation or thing: according to, or appealing to, one's own desire, liking, or taste.

Disloyal, perfidious.

(idiomatic) A declaration that the speaker is telling the truth.

plural of congestive heart failure

Alternative spelling of brokenhearted Feeling depressed, despondent, or hopeless, especially over losing a love.