1. What does the idiom 'spill the beans' mean?

2. Meaning of 'break the ice'?

3. What does 'hit the sack' mean?

4. Meaning of 'cost an arm and a leg'?

5. What does 'let the cat out of the bag' mean?

6. Meaning of 'once in a blue moon'?

7. What does 'under the weather' mean?

8. Meaning of 'barking up the wrong tree'?

9. What does 'the ball is in your court' mean?

10. Meaning of 'beat around the bush'?