An idiom is a word or phrase which means something different from what it says - it is usually a metaphor. Idioms are common phrases or terms whose meanings are not literal, but are figurative and only known through their common use
2.
Break a leg.
A way to wish someone good luck.
Live it up
Live wild, enjoy life, go to a lot of parties.
Kick the bucket
To die.
Shed crocodile tears
To cry about something but without actually caring.
Wild goose chase
Useless journey or pursuit.
No room to swing a cat
There was not a lot of space.
Pay through the nose