"Meuf" is French slang, a verlan (backwards) form of "femme" (woman). It means "woman," "girl," or "girlfriend." It's highly informal, used commonly among young people and friends. Grammatically, it's a feminine noun (une meuf, des meufs).

Trap: Its extreme informality makes it inappropriate for formal situations or when speaking to strangers or elders. While not inherently derogatory, overuse or misuse can sound vulgar or disrespectful. Use with caution in new contexts.