A young woman's group of
friends. They (the woman included) are to be thought of as one body. No one in the group does anything without everyone else's knowledge and/or approval. They use each other's eyes, ears, and minds collectively to figure out information and make decisions.
The term is most commonly used in a High School setting, but can also apply elsewhere.
“I once went out with a young man from Queens who only dated older women because younger ladies, he found, couldn’t do a thing without checking in with 15 of their
friends. When you date a younger woman, he said, you also date all her
friends, and it’s “a pain in the fucking
ass.” You can’t just go out and do your own thing because she must receive approval from a larger governing body. A slightly more mature lady has
friends—but she sure as shit doesn’t need their permission to live her life.”