Dreaming about a spider, especially one that keeps reappearing and getting bigger, can symbolize a few things. Spiders often represent feelings of anxiety, fear, or being trapped in a situation. The act of trying to kill the spider could suggest that you are attempting to confront or eliminate a problem or fear in your waking life.

The fact that the spider keeps rebirthing and growing larger might indicate that the issue you're dealing with is persistent or escalating despite your efforts to resolve it. This could represent unresolved emotions or challenges that you feel are becoming more overwhelming.

Finally, killing the biggest spider at the end of your dream may signify a sense of triumph or overcoming a significant fear or challenge. It suggests that you have the strength to confront your issues, even if they seem daunting.

Consider reflecting on what the spider might represent in your life—are there any ongoing worries or challenges that feel like they're growing? Acknowledging and addressing these can lead to personal growth and resolution.