An idiom is a phrase whose meaning differs from the meaning of the individual words in it, considered separately and on their own.
Here are some of them:
- It's raining cats and dogs – pouring rain.
- Beat a dead horse – arguing in vain.
- Birds of feather flock together – like attracts like, people with similar interests.
- Don't look a gift horse in the mouth – don't question a gift.
- Fired – dismissed from a job (The cook was fired because his kitchen was so unhygienic).
- Heads or tails? – heads or tails?
- Kick the bucket – to die, to pass away.
- Pull someone's leg – to tease someone, to fool around with someone.
- Put your foot in your mouth – to say something foolish.