"Gauge"

I’m relatively new and am just learning to read patterns. But I can’t find a single glossary or dictionary that defines “gauge” What does this mean:
“Gauge = 2sts + 4 rows” I know that sts means stiches. But I don’t get what this is telling me. Is this related to the needle size? Help! -Renee

This page might be helpful for you!

Thanks so much! Wow, I had no idea it was so complicated. Good thing I asked! :slight_smile:

I thought I understood it until I read that page! It helps a lot!!!

Looking forward to seeing some of your projects!