The idiom "chase rainbows" means to pursue something that is impossible or unrealistic. It is often used to describe someone who is wasting their time and energy pursuing a goal that is unlikely to be achieved.
For example, if someone is trying to become a famous singer but has no talent or connections in the music industry, you could say they are "chasing rainbows." Similarly, if someone is trying to win the lottery as a way to solve all their financial problems, you could say they are "chasing rainbows."
This idiom comes from the idea that chasing a rainbow is impossible because it is an optical illusion caused by the reflection, refraction, and dispersion of light in water droplets. No matter how fast you run, you can never reach the end of a rainbow.
In summary, "chasing rainbows" means pursuing an unrealistic goal, and it is used to suggest that someone is wasting their time and effort on something that is unlikely to happen.
• I don't want to chase rainbows, I just want a simple life.
• The company's CEO warned against chasing rainbows and urged employees to focus on achievable goals.
• She's always chasing rainbows, she needs to be more realistic.
• He chased rainbows for years before realizing his dreams were unrealistic.
• After years of chasing rainbows, she finally found success in her career.
• I used to chase rainbows, but now I focus on what's important.