Fa.wn (n): an innocent, young girl who gets involved with mature, married men Harry styles (27) decides to get involved with an innocent 17year old named Mercedes. People call her a fawn because she acts like a baby. She hates it but she loves hearing it roll off Harrys tongue. "Oh sweetheart your nickname fits you." "What?" "Fawn." "A what?" "It's a baby deer. Sweet,pure and innocent like you." WARNING! mature content