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I'm sure you know what a heart is, but do you know these phrases with heart?
They're all really useful, so maybe you should learn them by heart.
That means memorise them so you can remember them without notes.
For the test, I need you to learn these formulas by heart.
Of course, I know you're great at learning formulas.
Eat your heart out, Einstein.
We say eat your heart out to mean you think you are even better at something than someone famous for doing it,
though it's often just a joke.
Look at how I play football.
Eat your heart out, Ronaldo.
We often use heart to talk about feelings.