Meaning
An adult woman’s face with long hair. Literally it is a woman.
It is used to talk about a woman, a mum, a sister or a girlfriend, or as a quick self-reference. It is also the base for many woman-specific job and family emoji. Skin-tone versions exist, with 🧑 and 👨 as alternatives. Example: “Mum just opened her own little bakery 👩”.