An apparatus for heating the water supplied to a steam boiler.

The cistern that supplies water to the boiler of a steam engine.

A brave, resolute heart.

Alternative form of heartrot

To be an object of interest or affection to someone.

Said or written to a deceased person on his or her birthday in order to convey the good wishes of the speaker or writer.

(surgery) A surgical operation on the heart while a machine keeps the blood flowing.

(transitive with to) (figuratively) To speak honestly and vulnerably about one's feelings. / To show great compassion.

plural of open-heart surgery

Poecile cinctus, a small bird of the tit family Paridae