The phrase "girls lunch" typically refers to a meal or gathering among female friends or acquaintances, where they come together to enjoy each other's company, chat, and have a good time. Full definition
I have made this for girls lunch at work a few times this past year, and each of them love it as well! (halfbakedharvest.com)
Had a wonderful girls lunch out at the Cheesecake Factory this past week. (lemonythyme.com)
And I think that's a great outlook to have, despite all the skinnies on Insta showing off their beautiful skinny girl lunches. (bourbonlipstickandstilettos.com)