The concept "gay" has multiple meanings, depending on usage:

1. **Sexual Orientation**: Gay commonly refers to someone who is attracted to people of the same gender. While it is often used to describe men with an attraction to men, it may also be used in a wider sense for those in the LGBTQ+ community who relates to this orientation.\

2. **Historical Meaning**: In the past, "gay" meant cheerful, lighthearted, or bright and colorful. For example, historical texts or songs might use "gay" in this way, such as in "putting on our bright apparel" from the Christmas carol *Deck the Halls*.

3. **Colloquial Use**: In some casual or offensive contexts, "gay" has been used as a phrase to mean an lesbian undesirable thing. This usage is widely frowned upon and is considered offensive as it perpetuates stereotypes and stigmas.

If there’s something particular you’re referring to, do let me know!